Daily Updates Mock Test 134
MOCK TEST 134
SYLLABUS : GENERAL SCIENCE
TIME : 20 MINUTES FULL MARKS : 50*3 =150
EACH QUESTION CARRIES 3 MARKS , -VE MARKING = - 1 / WRONG ANSWERS
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মোক টেস্ট দিয়ে কেমন লাগলো কমেন্টে জানাবেন
- 1.
The maximum loss of water in transpiration is from—
- A.
Cuticle
- B.
Stomata
- C.
Hydothodes
- D.
Lenticles
Correct Answer
B. Stomata -
- 2.
Transpiration differ from evaporation in—
- A.
Frequency of water loss
- B.
Transpiration is physical process while evaporation is a physiological process.
- C.
Transpiration is physiological process while evaporation is a physical process.
- D.
Rate of water loss
Correct Answer
C. Transpiration is physiological process while evaporation is a physical process. -
- 3.
Maximum transpiration occur in
- A.
Xerophytic plants
- B.
Mesophytic plants
- C.
Algal cells
- D.
Hydrophytic plants
Correct Answer
B. Mesophytic plants -
- 4.
In plant process of transpiration occur through—
- A.
Root
- B.
Stem
- C.
Leaves
- D.
All the aerial part of plant
Correct Answer
D. All the aerial part of plant -
- 5.
Plant cooling occurs due to which of the following?
- A.
Guttation
- B.
Hydrolysis
- C.
Transpiration
- D.
Excretion
Correct Answer
A. Guttation -
- 6.
Transpiration is regulated by movement of which of the following?
- A.
Subsidiary cell
- B.
Guard cell
- C.
Mesophyll cell
- D.
Epidermal cell
Correct Answer
B. Guard cell -
- 7.
Which instrument is used for measuring the rate of transpiration?
- A.
Psychrometer
- B.
Potometer
- C.
Hygrometer
- D.
Porometer
Correct Answer
B. Potometer -
- 8.
In which of the following condition the rate of transpiration increases?
- A.
High humidity
- B.
Low velocity of wind
- C.
Excess amount of water in soil
- D.
Low humidity and high temperature
Correct Answer
D. Low humidity and high temperature -
- 9.
Two main function of leaves are—
- A.
Respiration and digestion
- B.
Photosynthesis and respiration
- C.
Photosynthesis and transpiration
- D.
Transpiration and respiration
Correct Answer
C. Photosynthesis and transpiration -
- 10.
Transpiration is high under—
- A.
High temperature
- B.
Dry environment
- C.
Low atmospheric pressure
- D.
All of the above
Correct Answer
D. All of the above -
- 11.
Urea is converted into ammonia and carbon dioxide by the enzyme-
- A.
Diastase
- B.
Urease
- C.
Lipase
- D.
Amylase
Correct Answer
B. Urease -
- 12.
Penicillin is isolated from:
- A.
Fungi
- B.
Algae
- C.
Virus
- D.
Bacteria
Correct Answer
A. Fungi -
- 13.
The source of oxygen produced during photosynthesis is
- A.
carbon dioxide
- B.
water
- C.
The air
- D.
glucose
Correct Answer
B. water -
- 14.
A detergent is a-
- A.
Cleansing agent
- B.
Drug
- C.
Catalyst
- D.
Soap
Correct Answer
A. Cleansing agent -
- 15.
Cells produce ATP most efficiently in the presence of
- A.
Water
- B.
carbon dioxide
- C.
oxygen
- D.
glucose
Correct Answer
C. oxygen -
- 16.
In the hydrogenation of oil-
- A.
Ni acts as a promoter
- B.
Cu acts as a catalyst
- C.
Tellurium acts as a promoter
- D.
Ni acts as a catalyst
Correct Answer
D. Ni acts as a catalyst -
- 17.
The process by which vegetable ghee is manufactured is known as-
- A.
Saponification
- B.
Hydrogenation
- C.
Esterification
- D.
Hydrolysis
Correct Answer
B. Hydrogenation -
- 18.
Soft soaps are-
- A.
Sodium salt
- B.
Calcium salt
- C.
Magnesium salt
- D.
Potassium salt
Correct Answer
D. Potassium salt -
- 19.
Bees wax is
- A.
Myricyl palmitate
- B.
Myricyl stearate
- C.
Myricyl oleate
- D.
Mixture of higher hydrocarbon
Correct Answer
A. Myricyl palmitate -
- 20.
Light energy is converted to chemical energy through the process of
- A.
Respiration
- B.
Fermentation
- C.
Photosynthesis
- D.
glycolysis
Correct Answer
C. Photosynthesis -
- 21.
At room temperature, formaldehyde is
- A.
A solid
- B.
A gas
- C.
A liquid
- D.
Not known
Correct Answer
B. A gas -
- 22.
Fat can be separated from milk in a cream separator because of:
- A.
Centripetal force
- B.
Cohesive force
- C.
Gravitational force
- D.
Centrifugal force
Correct Answer
D. Centrifugal force -
- 23.
The coagulation of protein is called
- A.
Denaturing
- B.
Deamination
- C.
Dehydration
- D.
Decay
Correct Answer
A. Denaturing -
- 24.
End of detergent have-
- A.
Ester group
- B.
Aldehyde
- C.
Amine group
- D.
Sodium sulphate
Correct Answer
D. Sodium sulphate -
- 25.
Soaps can be classified as-
- A.
Carbohydrates
- B.
Ethers
- C.
Salt of fatty acids
- D.
None of these
Correct Answer
C. Salt of fatty acids -
- 26.
In a car battery, electrolyte substance used is-
- A.
Hydrochloric acid
- B.
Sulphuric acid
- C.
Nitric acid
- D.
Distilled water
Correct Answer
B. Sulphuric acidExplanation
Electrolyte substance used in a car battery is Sulphuric acid (H_2 SO_4 ). It is a strong acid.Rate this question:
-
- 27.
The energy, found in dry cell is-
- A.
Mechanic
- B.
Electric
- C.
Chemical
- D.
Electromagnetic
Correct Answer
C. ChemicalExplanation
The best example of changing into electric energy from chemical energy is primary cells or batteries, the dry cell is also made up in this phenomenon.Rate this question:
-
- 28.
A pungent smell often present near the urinals is due to-
- A.
Sulphur-di-oxide
- B.
Chlorine
- C.
Ammonia
- D.
Urea
Correct Answer
C. AmmoniaExplanation
Urine odour is caused by the presence of Ammonia. Urine is an aqueous solution of greater than 95% water.Rate this question:
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- 29.
Which chemical substance is used for making rat poison?
- A.
Ethyl Alcohol
- B.
Methyl Isocyanate
- C.
Potassium Cyanide
- D.
Ethyl Isocyanide
Correct Answer
C. Potassium CyanideExplanation
Potassium Cyanide (KCN) or Zinc Phosphide is a highly toxic chemical used as a rodenticide a poison to kill the mouse.Rate this question:
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- 30.
Which gas is used in fire extinguisher?
- A.
Carbon dioxide
- B.
Hydrogen
- C.
Oxygen
- D.
Sulphur dioxide
Correct Answer
A. Carbon dioxideExplanation
Carbon dioxide gas is used in a fire extinguisher to control small fires, often in emergency situations.Rate this question:
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- 31.
Which one of the following is used in the manufacture of soaps?
- A.
Vegetable oil
- B.
Mobil oil
- C.
Kerosene oil
- D.
Cutting oil
Correct Answer
A. Vegetable oilExplanation
Soap is a combination of animal fat or plant oil and caustic soda. Many vegetable fats including olive oil, palm kernel oil and coconut oil are also used in soap making.Rate this question:
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- 32.
Milk openly placed for sometime becomes sour due to-
- A.
Carbonic acid
- B.
Lactic acid
- C.
Citric acid
- D.
Acetic acid
Correct Answer
B. Lactic acidExplanation
Milk contains a sugar called lactose. It also contains harmless bacteria called lactobacillus, which uses glucose for energy and creates lactic acid as a by-product. It is the lactic acid which makes the milk sour. The presence of lactic acid or lactate in milk is due to the fermentation of lactose caused mainly by lactic bacteria.Rate this question:
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- 33.
Which one of the following substances is used in the preservation of food stuff?
- A.
Citric Acid
- B.
Potassium Chloride
- C.
Sodium Benzoate
- D.
Sodium Chloride
Correct Answer
C. Sodium BenzoateExplanation
The chemical formula of Sodium Benzoate is NaC7H5O2. It is widely used as food preservative.Rate this question:
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- 34.
Which one of the following gases, released from biogas plant is used as a fuel gas?
- A.
Butane
- B.
Propane
- C.
Methane
- D.
Ethane
Correct Answer
C. MethaneExplanation
Methane is the principal gas in biogas. It is also the main component of natural gas, a fossil fuel, can be used to replace natural gas in many applications including cooking, heating, steam production, etc.Rate this question:
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- 35.
Which of the following is a fossil fuel?
- A.
Alcohol
- B.
Ether
- C.
Water gas
- D.
Natural gas
Correct Answer
D. Natural gasExplanation
Fossil fuels, including coal, oil and natural gas are currently the world’s primary energy sources.Rate this question:
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- 36.
The advantage of detergents over soaps is –
- A.
Detergents are soluble in water
- B.
Detergents could not give much lather
- C.
Detergents give lather even with hard water
- D.
Soaps give lather with only soft water
Correct Answer
C. Detergents give lather even with hard waterExplanation
Detergents give lather even with hard water while soaps give lather with only soft water.Rate this question:
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- 37.
The gas used for artificial fruit ripening of green fruit is –
- A.
Nepthalene
- B.
Acetylene
- C.
Ethane
- D.
Methane
Correct Answer
B. AcetyleneExplanation
The gas used for artificial fruit ripening of green fruit is Acetylene.Rate this question:
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- 38.
The substance most commonly used as a food preservative is –
- A.
Sodium carbonate
- B.
Tartaric acid
- C.
Lactic acid
- D.
Sodium salt of benzoic acid
Correct Answer
D. Sodium salt of benzoic acidExplanation
Sodium benzoate (sodium salt of benzoic acid) is most commonly used as a food preservative.Rate this question:
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- 39.
Tetra Ethyl Lead (TEL) is used as-
- A.
a catalyst in burning fossil fuel
- B.
An antioxidant
- C.
A reluctant
- D.
An antiknock compound
Correct Answer
D. An antiknock compoundExplanation
Tetra Ethyl Lead (TEL) is used as Anti knock agent.Rate this question:
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- 40.
Detergents clean surfaces on the principle of –
- A.
Viscosity
- B.
Surface tension
- C.
Elasticity
- D.
Floatation
Correct Answer
B. Surface tensionExplanation
Detergents clean surfaces on the principle of surface tension. Detergents are soapless soap. They produce leather with soft water as well as hard water.Rate this question:
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- 41.
The element which is used for vulcanising rubber –
- A.
Sulphur
- B.
Bromine
- C.
Silicon
- D.
Phosphorus
Correct Answer
A. SulphurExplanation
Vulcanisation is a chemical process for converting rubber or related polymers into more durable materials via the addition of sulphur or other equivalent curatives or accelerators. By far the most common vulcanising methods depend on sulphur.Rate this question:
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- 42.
Which one of the following is used in making pencils?
- A.
Charcoal
- B.
Bone black
- C.
Black ash
- D.
Graphite
Correct Answer
D. GraphiteExplanation
Graphite is used to make pencil.Rate this question:
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- 43.
Pollutant from motor car exhaust that causes mental disease is –
- A.
Pb
- B.
NO2
- C.
SO2
- D.
Hg
Correct Answer
A. PbExplanation
Pollutant from motor car exhaust that causes mental disease is lead. Lead is produced cause lead poisoning.Rate this question:
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- 44.
The ozone layer is present in –
- A.
Troposphere
- B.
Ionosphere
- C.
Stratosphere
- D.
Exosphere
Correct Answer
C. StratosphereExplanation
Ozone layer is present in Stratosphere.Rate this question:
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- 45.
The two metal ions that cause hardness to water are –
- A.
Calcium and Magnesium
- B.
Sodium and Calcium
- C.
Sodium and Potassium
- D.
Sodium and Magnesium
Correct Answer
A. Calcium and MagnesiumExplanation
The bicarbonates, chlorides and sulphates of calcium and magnesium cause hardness to water.
The bicarbonates cause temporary hardness while chlorides and sulphates cause permanent hardness.Rate this question:
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- 46.
When a running car stops suddenly, the passengers tends to lean forward because of –
- A.
Centrifugal force
- B.
Inertia of rest
- C.
Inertia of motion
- D.
Gravitation force
Correct Answer
C. Inertia of motionExplanation
When the bus is running, the whole body of the passenger is in the state of motion. When the bus stops suddenly, the lower part of the passengers body which is in contact with the bus, comes to rest. But the passengers upper portion remains in the state of motion due to the inertia of motion. This is the reason for the passenger to lean forward when the bus stops suddenly.Rate this question:
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- 47.
If a boy is sitting in a train, which is moving at a constant velocity throws a ball straight up into the air, the ball will –
- A.
Fall in front of him
- B.
Fall behind him
- C.
Fall into hand
- D.
None of the above
Correct Answer
C. Fall into handExplanation
If a boy is sitting in a train, which is moving at a constant velocity throws a ball straight up into the air, the ball will fall into his hand.Rate this question:
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- 48.
A person is hurt on kicking a stone due to –
- A.
Inertia
- B.
Velocity
- C.
Reaction
- D.
Momentum
Correct Answer
C. ReactionExplanation
A person is hurt on kicking a stone due to reaction. Here Newton third law of motion is applied which states that every action has equal and opposite reaction.Rate this question:
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- 49.
For a body moving with non-uniform acceleration –
- A.
Displacement-time graph is linear
- B.
Displacement-time graph is non-linear
- C.
Velocity-time graph is non-linear
- D.
Velocity-time graph is linear
Correct Answer
C. Velocity-time graph is non-linearExplanation
For a body moving with non-uniform acceleration, the velocity -time graph is non linear.Rate this question:
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- 50.
A parachute descends slowly whereas a stone dropped from the same height falls rapidly, because –
- A.
Stone is heavier than parachute
- B.
Special mechanisms are present in parachute
- C.
A parachute has a larger surface area and air resistance is more
- D.
None of the above
Correct Answer
C. A parachute has a larger surface area and air resistance is moreExplanation
A parachute descends slowly because it has a larger surface area and air resistance is more.Rate this question:
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