Sample Paper Set II For 11th And 12th

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| By Tanmay Shankar

Tanmay Shankar

Community Contributor

Quizzes Created: 484 | Total Attempts: 1,781,371

Questions: 15 | Attempts: 401 | Updated: Mar 14, 2023

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Sample Paper Set II For 11th And 12th - Quiz

Question No: 1-5 (Physics)
Question No: 6-10 (Chemistry)
Question No: 11-15 (Mathematics)

Questions and Answers

1.

A charge q is placed at the centre of the line joining two equal charges Q. The system of the three charges will be in equilibrium if q is equal to :
- A.
- B.
- C.
  
  +
- D.
Correct Answer
B.

Explanation
Refer to figure. The three charges will be in equilibrium if no net force acts on each charge.

Charge q is in equilibrium because the forces acting on it by charge Q at A and charge Q at

B are equal and opposite. Charge Q at A will be in equilibrium if

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2.

A hollow metal sphere is charged such that the potential at its centre is V. The potential on the surface of the sphere is :
- A.
  
  Zero
- B.
  
  V
- C.
  
  More than V
- D.
  
  Less than V
Correct Answer
B. V

Explanation
The potential inside a spherical conductor is constant including that on its surface.

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3.

An infinite number of charges, equal to q, are placed along the x-axis at x = 1, x = 2, x = 4, x = 8 .... and so on.The electric potential at the point x = 0 due to this set of charges is :
- A.
- B.
- C.
- D.
Correct Answer
B.

Explanation
The potential at x = 0 due to a set of infinite number of charges placed on the x-axis as shown in figure, is

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4.

The displacement of a particle executing simple harmonic motion varies with time t as The amplitude of oscillation is :
- A.
  
  A
- B.
- C.
- D.
  
  2 a
Correct Answer
C.
5.

Find the electric field due to three concentric thin long cylinders of linear charge densities –, +2 and just outside the outer cylinder.
- A.
- B.
- C.
- D.
  
  None of these
Correct Answer
C.
6.

Reactivity of carbonyl compound towards NAR is-
- A.
  
  III > I > II
- B.
  
  III > II > I
- C.
  
  I > II > III
- D.
  
  I > III > II
Correct Answer
C. I > II > III

Explanation
The reactivity of carbonyl compounds towards NAR (nucleophilic addition reaction) is determined by the nature of the carbonyl group. In this case, the correct answer is I > II > III, which means that carbonyl compound I is the most reactive towards NAR, followed by compound II, and then compound III. This suggests that carbonyl compound I has a more electrophilic carbonyl group, making it more susceptible to nucleophilic attack compared to compound II and compound III.

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7.

The ratio of total number of bond to the total number of bond in anhydride of
- A.
  
  4
- B.
  
  2
- C.
  
  3
- D.
  
  8
Correct Answer
A. 4
8.

Which of the following will have positively charged particles in dispersed phase?
- A.
  
  sol
- B.
  
  Milk
- C.
  
  Blood
- D.
  
  Gold sol
Correct Answer
C. Blood

Explanation
Blood is positively charged colloid

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9.

Which of the following option is incorrect regarding ?
- A.
- B.
  
  P–Cl bond length is less than P–F bond length.
- C.
  
  Cl – – Cl bond angle is less than Cl – – F bond angle.
- D.
  
  Its dipole moment is zero
Correct Answer
C. Cl – – Cl bond angle is less than Cl – – F bond angle.
10.

Aspartame, an artificial sweetener contains 9.52 wt. % nitrogen. There are two nitrogen atoms per molecule. What is the molecular weight of aspartame?
- A.
  
  147
- B.
  
  294
- C.
  
  588
- D.
  
  266
Correct Answer
B. 294

Explanation
Molecular weight of aspartame =

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11.

There exists a natural number N which is 50 times its own logarithm to the base 10, then number of digits in N is
- A.
  
  1
- B.
  
  2
- C.
  
  3
- D.
  
  4
Correct Answer
C. 3
12.
- A.
  
  1
- B.
  
  –1
- C.
- D.
Correct Answer
D.
13.

The values of cos
- A.
  
  0
- B.
- C.
- D.
Correct Answer
A. 0
14.
- A.
  
  1
- B.
  
  2
- C.
  
  3
- D.
  
  4
Correct Answer
C. 3
15.

Consider the function f(x) = Statement-1: f '() = 0. Statement-2: f(c) =
- A.
  
  Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement- 1
- B.
  
  Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.
- C.
  
  Statement-1 is true, statement-2 is false.
- D.
  
  Statement-1 is false, statement-2 is true.
Correct Answer
C. Statement-1 is true, statement-2 is false.

Explanation
Statement-1 states that the derivative of the function f(x) is equal to 0. This means that the function f(x) has a critical point or a stationary point at x=c, where the derivative is equal to 0.

Statement-2 is not a complete statement as it does not provide any information about the function f(x) at x=c. Without knowing the value of f(c), we cannot determine if statement-2 is a correct explanation for statement-1. Therefore, statement-2 is false.

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Current Version
Mar 14, 2023

Quiz Edited by
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Jan 15, 2014

Quiz Created by
Tanmay Shankar

Sample Paper Set II For 11th And 12th

A charge q is placed at the centre of the line joining two equal charges Q. The system of the three charges will be in equilibrium if q is equal to :

A hollow metal sphere is charged such that the potential at its centre is V. The potential on the surface of the sphere is :

An infinite number of charges, equal to q, are placed along the x-axis at x = 1, x = 2, x = 4, x = 8 .... and so on.The electric potential at the point x = 0 due to this set of charges is :

The displacement of a particle executing simple harmonic motion varies with time t as The amplitude of oscillation is :

Find the electric field due to three concentric thin long cylinders of linear charge densities –, +2 and just outside the outer cylinder.

Reactivity of carbonyl compound towards NAR is-

The ratio of total number of bond to the total number of bond in anhydride of

Which of the following will have positively charged particles in dispersed phase?

Which of the following option is incorrect regarding ?

Aspartame, an artificial sweetener contains 9.52 wt. % nitrogen. There are two nitrogen atoms per molecule. What is the molecular weight of aspartame?

There exists a natural number N which is 50 times its own logarithm to the base 10, then number of digits in N is

The values of cos

Consider the function f(x) = Statement-1: f '() = 0. Statement-2: f(c) =