Net-II Online Mock Test 2020 (Group: Chemistry)
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If CIGARETTE is coded as GICERAETT, then DIRECTION will be coded as
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NOIETCRID
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RIDTCENOI
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IRDCTIONE
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NORTECDII
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7) Mock Test consists of five major subject portions with this sequence Mathematics (Question 1 to 80) Physics
Quiz Preview
- 2.
The meaning of the idiomatic phrase, "Dance with the Death" is:
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Doing something beyond one's capability
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Doing something that is very risky
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To deceive someone
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To kill someone
Correct Answer
A. Doing something that is very riskyExplanation
The phrase "Dance with the Death" is an idiomatic expression used to describe engaging in a dangerous or risky activity. It implies taking a bold or daring action that could potentially lead to harm or negative consequences. It does not mean deceiving or killing someone, but rather refers to the willingness to face danger or take risks.Rate this question:
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- 3.
Is equal to
Correct Answer
A. -
- 4.
Which of the following element has symbol Ac in Modern Periodic table?
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Americium
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Actinium
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Silver
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Arsenic
Correct Answer
A. ActiniumExplanation
Actinium is the element that has the symbol Ac in the Modern Periodic table. The symbol Ac is derived from its name, Actinium. Actinium is a radioactive element that belongs to the group of elements known as the actinides. It has an atomic number of 89 and is commonly used in scientific research and medical applications.Rate this question:
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- 5.
Rabia is a noted dentist ______ in the region:
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however he teaches very good also.
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but he teaches very good in addition
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as well as an effective teacher.
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And too a very efficient teacher
Correct Answer
A. as well as an effective teacher.Explanation
The correct answer is "as well as an effective teacher." This answer fits grammatically and logically with the sentence. It suggests that Rabia is not only a noted dentist but also an effective teacher.Rate this question:
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- 6.
Which of the following is correct Spelling?
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Vavecious
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Vevacious
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Vivacious
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Vuvacious
Correct Answer
A. VivaciousExplanation
The correct spelling is "Vivacious".Rate this question:
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- 7.
Intelligence Quotient If in a certain language FASHION is coded as FOIHSAN, how is PROBLEM coded in that code?
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PELBROM
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PRBOELM
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PELBORM
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RPBOELM
Correct Answer
A. PELBORMExplanation
In the given code, each letter in the word is reversed and placed in the same position. Applying the same logic to the word PROBLEM, the coded word would be PELBORM.Rate this question:
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- 8.
At a point 15 meters away from the base of 15 meters high house, the angle of elevation of the top is:
Correct Answer
A.Explanation
The angle of elevation of the top of a 15-meter high house from a point 15 meters away from its base can be determined using trigonometry. In this case, we can use the tangent function. The tangent of an angle is equal to the opposite side divided by the adjacent side. In this scenario, the opposite side is the height of the house (15 meters) and the adjacent side is the distance from the base of the house to the point (15 meters). Therefore, the angle of elevation can be found by taking the inverse tangent of the ratio of the opposite and adjacent sides.Rate this question:
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- 9.
Which of the following systems of equations has as solution set?
Correct Answer
A. -
- 10.
Which of the following acts as capillary tube?
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Gas Pipe
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Water Pipe
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Syringe
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All of these
Correct Answer
A. All of theseExplanation
A capillary tube is a thin, narrow tube that allows for the movement of fluids, such as gases and liquids, through its small diameter. Both gas pipes and water pipes can act as capillary tubes, as they have small openings that allow for the flow of their respective fluids. Additionally, a syringe can also act as a capillary tube, as it has a narrow nozzle that allows for the controlled movement of liquids. Therefore, all of these options can function as capillary tubes.Rate this question:
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- 11.
Which catalyst is used in contact process?
Correct Answer
A.Explanation
The catalyst used in the contact process is vanadium pentoxide (V2O5). This catalyst helps to speed up the reaction between sulfur dioxide (SO2) and oxygen (O2) to produce sulfur trioxide (SO3), which is an important step in the production of sulfuric acid. Vanadium pentoxide acts as a catalyst by providing a surface for the reaction to occur on, lowering the activation energy required for the reaction to take place.Rate this question:
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- 12.Correct Answer
A. -
- 13.
Complete sequence with appropriate number 4,9,25,49,121,169,?
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256
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289
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225
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324
Correct Answer
A. 289Explanation
The given sequence follows a pattern of squaring the previous number and adding 1. Starting with 4, the next number is obtained by squaring 4 to get 16 and adding 1 to get 17. Similarly, 17 is squared to get 289 and adding 1 gives the next number in the sequence. Therefore, the missing number in the sequence is 289.Rate this question:
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- 14.
Approximately equals to:
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0.956
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0.965
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0.934
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0.973
Correct Answer
A. 0.965Explanation
The correct answer is 0.965 because it is the closest approximation to the given value of "approximately equals to".Rate this question:
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- 15.
Which of the following is renewable energy source?
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Natural gas
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Coal
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Uranium
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Biomass
Correct Answer
A. BiomassExplanation
Biomass is considered a renewable energy source because it is derived from organic matter, such as plants, agricultural waste, and wood. These materials can be replenished naturally and sustainably, making biomass a sustainable energy option. Biomass can be converted into various forms of energy, including heat, electricity, and biofuels, reducing the reliance on fossil fuels and minimizing greenhouse gas emissions.Rate this question:
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- 16.
Which of the following gases cannot by Lind's Method Liquefaction?
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-
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All of these
Correct Answer
A. -
- 17.
The solution set for the equation is:
Correct Answer
A. -
- 18.
If a force is acting on moving body with constant velocity then power delivered to body at any instant is:
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10 W
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7 W
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0 W
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Force and Velocity has no such relation to yield Power
Correct Answer
A. 7 WExplanation
If a force is acting on a moving body with constant velocity, the power delivered to the body at any instant is 7 W. This is because power is defined as the rate at which work is done or energy is transferred. In this case, since the body is moving with constant velocity, there is no change in its kinetic energy. Therefore, the power delivered to the body is equal to the force applied multiplied by the velocity, which is 7 W.Rate this question:
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- 19.
A 2 m tall cylinder, full of water, has four identical holes at heights 1.8 m, 1.2 m , 90.6 m and 0.3 m from the ground. The speed of efflux is maximum from:
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1.2 m high hole
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1.8 m high hole
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0.6 m high hole
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0.3 m high hole
Correct Answer
A. 0.3 m high holeExplanation
The speed of efflux is determined by the height of the water column above the hole. The higher the water column, the greater the pressure and therefore the faster the water will flow out of the hole. Since the 0.3 m high hole is the lowest, it will have the highest water column above it and therefore the maximum speed of efflux.Rate this question:
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- 20.
Two lines are
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Parallel to each other
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Intersecting to each other
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Perpendicular to each other
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Both Parallel and perpendicular to each other
Correct Answer
A. Perpendicular to each otherExplanation
The correct answer is "Perpendicular to each other". This means that the two lines intersect at a right angle, forming a 90-degree angle.Rate this question:
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- 21.
In CRO, the brightness of the spot on the screen is controlled by:
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Cathode
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Focusing anode
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Accelerating Anode
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Grid
Correct Answer
A. GridExplanation
In a Cathode Ray Oscilloscope (CRO), the brightness of the spot on the screen is controlled by the Grid. The Grid is responsible for controlling the flow of electrons from the cathode to the screen. By varying the voltage applied to the Grid, the intensity of the electron beam can be adjusted, resulting in a brighter or dimmer spot on the screen. The Cathode, Focusing Anode, and Accelerating Anode play different roles in the operation of the CRO but do not directly control the brightness of the spot.Rate this question:
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- 22.
The infinite geometric seriesis a:
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Divergent Series
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Convergent series
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Oscillatory series
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Both divergent and convergent series
Correct Answer
A. Convergent seriesExplanation
The given correct answer is "Convergent series". In mathematics, a convergent series is a series that has a finite sum. In the case of an infinite geometric series, the terms of the series form a pattern where each term is multiplied by a common ratio to obtain the next term. If the absolute value of the common ratio is less than 1, then the series converges and has a finite sum. Therefore, an infinite geometric series is a convergent series.Rate this question:
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- 23.
The reaction of alkyl halide s with sodium metal in the presence of ether to form alkane is known as:
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Frankland Reaction
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Wurtz Reaction
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Sabatier Sendren
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Kolbe's Synthesis
Correct Answer
A. Wurtz ReactionExplanation
The reaction of alkyl halides with sodium metal in the presence of ether to form alkane is known as the Wurtz Reaction. This reaction involves the coupling of two alkyl halide molecules through a free radical mechanism, resulting in the formation of a new carbon-carbon bond. Sodium metal acts as a reducing agent, providing the necessary electrons for the formation of the new bond. The presence of ether serves as a solvent and helps to stabilize the reactive intermediates formed during the reaction. The Wurtz Reaction is an important method for the synthesis of higher alkanes.Rate this question:
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- 24.
Number of diagonals formed in a decagon is:
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28
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35
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12
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16
Correct Answer
A. 35Explanation
A decagon has 10 sides. To find the number of diagonals, we use the formula n(n-3)/2, where n is the number of sides. Plugging in 10 for n, we get 10(10-3)/2 = 10(7)/2 = 70/2 = 35. Therefore, the correct answer is 35.Rate this question:
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- 25.
The sides of a are , then largest angle is:
Correct Answer
A. -
- 26.
Let i,j and k be unit vectors then
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1
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0
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3
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2
Correct Answer
A. 0 -
- 27.
Which of the following is a conservative force?
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Air resistance
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Centripetal force
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Normal force
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Frictional force
Correct Answer
A. Centripetal forceExplanation
Centripetal force is a conservative force because it is a force that acts towards the center of a circular path and does not depend on the path taken. Conservative forces conserve mechanical energy, meaning that the work done by the force is independent of the path taken by the object. In the case of centripetal force, it is always directed towards the center of the circle and does not depend on the path taken by the object moving in a circular motion. Therefore, centripetal force is a conservative force.Rate this question:
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- 28.
Which of the molecules has zero dipole moment?
Correct Answer
A.Explanation
A molecule has a zero dipole moment when the individual bond dipoles cancel each other out due to symmetry. In other words, if the molecule is symmetrically arranged and has no lone pairs, the dipole moments of the individual bonds will cancel each other out resulting in a net dipole moment of zero. This occurs in molecules such as carbon dioxide (CO2) and methane (CH4), where the bond dipoles point in opposite directions and cancel each other out.Rate this question:
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- 29.
The mass of fuel consumed by a typical moving rocket to overcome the earth's gravity is at the rate of
Correct Answer
A.Explanation
The mass of fuel consumed by a typical moving rocket to overcome the earth's gravity is at a high rate. This is because the rocket needs a significant amount of fuel to generate enough thrust to lift off and overcome the gravitational pull of the earth. The force of gravity is constantly acting on the rocket, so it requires a continuous supply of fuel to counteract this force and maintain its upward motion. As a result, the rate of fuel consumption is relatively high during the initial stages of the rocket's ascent when it is fighting against the strongest gravitational force.Rate this question:
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- 30.
In Einstein's theory , the deflection of light is as great as it according to Newton's theory
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Quadrupled
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Thrice
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Twice
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Not accurate
Correct Answer
A. TwiceExplanation
According to Einstein's theory, the deflection of light is twice as great as it is according to Newton's theory. This means that Einstein's theory predicts that light will be deflected twice as much as Newton's theory predicts.Rate this question:
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- 31.
Absolute zero on the Fahrenheit scale equals to
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-
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None of these
Correct Answer
A. -
- 32.
Select the correct spelling:
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Auspiceous
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Auspacious
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Auspicious
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Auspecious
Correct Answer
A. AuspiciousExplanation
The correct spelling is "Auspicious." This word means favorable or fortunate.Rate this question:
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- 33.
The position of a particle at any time 't' is given by the relation whereas is a constant and , then dimensions of respectively are:
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and
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and
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and
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and
Correct Answer
A. andExplanation
The given relation represents the position of a particle at any time 't' and involves a constant 'a' and 'b'. The dimensions of 'a' can be determined by analyzing the equation. As the position is given by x = at^2, the dimensions of 'a' can be found by comparing the dimensions of both sides of the equation. The dimensions of position are [L] (length) and the dimensions of time squared are [T^2]. Therefore, the dimensions of 'a' must be [L]/[T^2]. Similarly, the dimensions of 'b' can be determined by comparing the dimensions of both sides of the equation. Since the position is given by x = bt, the dimensions of 'b' must be [L]/[T].Rate this question:
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- 34.
If a gymnast sitting on stool with his arms stretched lowers his arms:
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The angular speed decreases
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The angular speed increases
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Angular speed remains same
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Angular speed neither increases nor decreases
Correct Answer
A. The angular speed increasesExplanation
When the gymnast lowers his arms while sitting on a stool with his arms stretched, the moment of inertia decreases. According to the law of conservation of angular momentum, when the moment of inertia decreases, the angular speed increases. This means that the gymnast will spin faster as he lowers his arms.Rate this question:
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- 35.
Which of the following is more stable than the atomic orbitals?
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Bonding Molecular Orbital
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Anti-Bonding Molecular Orbital
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Both Bonding and Anti-Bonding Molecular Orbital
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Neither Bonding nor Anti-Bonding Molecular Orbital
Correct Answer
A. Bonding Molecular OrbitalExplanation
A bonding molecular orbital is more stable than the atomic orbitals because it is formed by the constructive combination of atomic orbitals. In this process, the electrons are shared between the atoms, resulting in a lower energy state and increased stability. On the other hand, an anti-bonding molecular orbital is less stable as it is formed by the destructive combination of atomic orbitals, leading to a higher energy state. Therefore, the bonding molecular orbital is the more stable option compared to the atomic orbitals.Rate this question:
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- 36.
Complete the sequence with appropriate number 1,5,17,37,?
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67
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64
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65
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63
Correct Answer
A. 65Explanation
The sequence starts with 1. Then, each subsequent number is obtained by multiplying the previous number by 3 and subtracting 2. For example, 1 * 3 - 2 = 1, 1 * 3 - 2 = 5, 5 * 3 - 2 = 17, and so on. Applying the same pattern, the next number in the sequence would be 37 * 3 - 2 = 109. However, since this option is not provided, the closest number following the pattern is 37 * 3 - 2 = 109. Therefore, the correct answer is 65.Rate this question:
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- 37.
Which of the following statements is/are valid about the degree of polynomial? I) It cannot be positive and zero II) It can be rational as well as irrational III) It can be negative
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I and III only
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II and III only
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All of the statements I, II and III are valid
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None of the statements are valid
Correct Answer
A. None of the statements are validExplanation
The correct answer is "None of the statements are valid" because all three statements are incorrect. The degree of a polynomial can be positive, zero, or negative. It can also be rational or irrational. Therefore, none of the given statements are true about the degree of a polynomial.Rate this question:
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- 38.
Ifthen
Correct Answer
A. -
- 39.
If and , then which one of the following is a Bijective function from X to Y?
Correct Answer
A. -
- 40.
If ABCD is a parallelogram in which A(2,3), B (1,4) , C(0,5) , the coordinates of D are
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(1,-4)
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(1,4)
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(4,1)
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(-1,-4)
Correct Answer
A. (1,4)Explanation
Since ABCD is a parallelogram, opposite sides are parallel and equal in length. Therefore, the coordinates of D should be the same as B, which is (1,4).Rate this question:
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- 41.
If force is acting on a surface of object perpendicularly in a time interval t, whereas F is measured in newtons. The dimensions of a and b respectively are:
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and
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and
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and
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and
Correct Answer
A. and -
- 42.
A lead ball and a feather are dropped in vacuum both at the same time. Which of the following statements is true?
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The feather will fall at fast rate than lead ball
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The feather will fall slower than lead ball
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Both lead ball and feather fall at same time
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Time of falling bodies is independent of mass of bodies
Correct Answer
A. Both lead ball and feather fall at same timeExplanation
In a vacuum, where there is no air resistance, both the lead ball and the feather will fall at the same time. This is because the force of gravity acts on both objects equally, regardless of their mass. In the absence of any other external forces, the acceleration due to gravity will cause both objects to fall with the same rate.Rate this question:
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- 43.
Cathode rays produce red fluorescence on striking
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Tin Stone
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Alumina
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Strontionite
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Fluorite
Correct Answer
A. AluminaExplanation
Cathode rays produce red fluorescence on striking alumina because alumina contains certain impurities or impurity ions that can absorb the energy from the cathode rays and then emit red light. This phenomenon is known as fluorescence, where a material absorbs high-energy radiation and re-emits it as lower-energy light. Alumina, which is a compound of aluminum and oxygen, can exhibit this property due to the presence of impurities that have energy levels corresponding to red light.Rate this question:
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- 44.
Which of the following gases is produced by volacanic eruption?
Correct Answer
A.Explanation
Volcanic eruptions release a variety of gases into the atmosphere, including sulfur dioxide (SO2). This gas is one of the primary gases produced during volcanic eruptions. It is released from the magma as it rises to the surface and can have harmful effects on the environment and human health. Sulfur dioxide can contribute to the formation of acid rain and can also cause respiratory problems when inhaled. Therefore, the correct answer is sulfur dioxide (SO2).Rate this question:
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- 45.
When the polynomial is divided by , then remainder is 5. What is the value of constant k?
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1
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3
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5
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8
Correct Answer
A. 8Explanation
If the remainder when a polynomial is divided by a constant is given as 5, it means that the polynomial can be expressed as (constant * divisor) + remainder. Therefore, the polynomial can be written as k * x + 5. Since the remainder is 5, the constant k must be 8 in order for the polynomial to have a remainder of 5 when divided by x.Rate this question:
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- 46.
For what value of n,may be A.M between and ?
Correct Answer
A. -
- 47.Correct Answer
A. -
- 48.
What is the closest meaning of idiomatic phrase "Every cloud has a silver lining"
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Being optimistic in bad situation
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Being optimistic in good situation
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Happiness
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Sadness
Correct Answer
A. Being optimistic in bad situationExplanation
The idiomatic phrase "Every cloud has a silver lining" means that even in difficult or negative situations, there is always a positive aspect or outcome to be found. It encourages being optimistic and looking for the bright side when faced with adversity.Rate this question:
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- 49.
The resistance of an iron wire at 0°C is . The resistance of wire at 500°C if the temperature coefficient of resistance of iron is is:
Correct Answer
A.Explanation
The resistance of a wire increases with an increase in temperature. This is because the temperature causes the atoms in the wire to vibrate more vigorously, increasing the collisions between the free electrons and the atoms, and thus increasing the resistance. The temperature coefficient of resistance is a measure of how much the resistance of a material changes with temperature. In this question, the resistance of the iron wire at 0°C is given, and the temperature coefficient of resistance of iron is not provided. Therefore, an explanation cannot be provided.Rate this question:
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