Which of the following statements are correct?
Choose the correct answer from the options given below:
1. A, C and D only
2. A, C and E only
3. C, D and E only
4. A, B and D only
| A. | Inside a conductor, the electrostatic field is zero. |
| B. | The electric field at the surface of a charged conductor does not depend on its surface charge density. |
| C. | The interior of a charged conductor can have no excess charge in the static situation. |
| D. | At the surface of a charged conductor, the electrostatic field must be normal to the surface at every point. |
| E. | The electrostatic potential is zero everywhere inside a charged conductor. |
1. A, C and D only
2. A, C and E only
3. C, D and E only
4. A, B and D only
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Match List I with List II :
Choose the correct answer from the options given below:
1. A-III, B-I, C-II, D-IV
2. A-III, B-IV, C-I, D-II
3. A-IV, B-I, C-II, D-III
4. A-IV, B-III, C-II, D-I
| List I (Electromagnetic wave) |
List II (Production) |
||
| A. | Microwave | I. | Electrons in atoms emit light when they move from a higher energy level to a lower energy level |
| B. | Visible light | II. | Radioactive decay of nucleus |
| C. | Gamma rays | III | Vibration of atoms and molecules |
| D. | Infra-red rays | IV. | Klystron valve or magnetron valve |
1. A-III, B-I, C-II, D-IV
2. A-III, B-IV, C-I, D-II
3. A-IV, B-I, C-II, D-III
4. A-IV, B-III, C-II, D-I
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A uniform metallic wire having resistance \(4~\Omega\) is bent to form a square loop \((ABCD)\) (see figure). A resistance of \(2~\Omega\) is connected between points \(B\) and \(D\) and a battery of \(2~\text{V}\) is connected across points \(A\) and \(C\) as shown in the figure. Now the value of the current \((I)\) is:
1. \(4~\text{A}\)
2. \(8~\text{A}\)
3. \(4.5~\text{A}\)
4. \(2~\text{A}\)
1. \(4~\text{A}\)
2. \(8~\text{A}\)
3. \(4.5~\text{A}\)
4. \(2~\text{A}\)
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An unknown nucleus has a nuclear density of \(2.29 \times 10^{17} ~\text{kg/m}^3\) and mass of \(19.926 \times 10^{-27} \text{ kg}\). Its mass number \(A\) is approximately:
(take \(R_0 = 1.2 \times 10^{-15} \text{ m}\), \(4\pi = 12.56\))
1. \(12\)
2. \(16\)
3. \(19\)
4. \(20\)
(take \(R_0 = 1.2 \times 10^{-15} \text{ m}\), \(4\pi = 12.56\))
1. \(12\)
2. \(16\)
3. \(19\)
4. \(20\)
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Match List I with List II
Choose the correct answer from the options given below:
1. A-II, B-III, C-IV, D-I
2. A-III, B-II, C-I, D-IV
3. A-I, B-IV, C-III, D-II
4. A-IV, B-I, C-II, D-III
| List I | List II | ||
| A. | Young's Modulus | I. | \(\dfrac{\Delta d}{\Delta L} \left( \dfrac{L}{d} \right)~\) |
| B. | Compressibility | II. | \(\dfrac{FL}{A(\Delta L)}~\) |
| C. | Bulk Modulus | III. | \(-\dfrac{1}{\Delta P} \left( \dfrac{\Delta V}{V} \right)~\) |
| D. | Poisson's Ratio | IV. | \(-P \left( \dfrac{V}{\Delta V} \right)~\) |
1. A-II, B-III, C-IV, D-I
2. A-III, B-II, C-I, D-IV
3. A-I, B-IV, C-III, D-II
4. A-IV, B-I, C-II, D-III
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The correct statement with regard to the secondary structure of DNA/RNA is:
| 1. | DNA possesses a single strand helix structure and contains uracil as one of the four bases. |
| 2. | DNA possesses a double strand helix structure and contains thymine as one of the four bases. |
| 3. | RNA possesses a double strand helix structure and contains uracil as one of the four bases. |
| 4. | RNA possesses a single strand helix structure and contains thymine as one of the four bases. |
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Match List-I with List-II:
Choose the correct answer from the options given below :
(1) A-I, B-III, C-I, D-IV
(2) A-II, B-III, C-IV, D-I
(3) A-IV, B-II, C-III, D-I
(4) A-I, B-II, C-IV, D-IV
| List-I (Quantum Numbers) 'n' 'l' |
List-II (Orbital) |
||
| A. | 2 1 | I. | 3d |
| B. | 4 0 | II. | 2p |
| C. | 5 3 | III. | 4s |
| D. | 3 2 | IV. | 5f |
Choose the correct answer from the options given below :
(1) A-I, B-III, C-I, D-IV
(2) A-II, B-III, C-IV, D-I
(3) A-IV, B-II, C-III, D-I
(4) A-I, B-II, C-IV, D-IV
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During Lassaigne's test, the elements present in an organic compound are converted from:
| 1. | covalent form to covalent form |
| 2. | ionic form to ionic form |
| 3. | covalent form to ionic form |
| 4. | ionic form to covalent form |
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The number of chlorine atoms present in the organic products X and Y of the following reactions, respectively, are:
1. 3 and 6
2. 6 and 3
3. 3 and 3
4. 6 and 6
1. 3 and 6
2. 6 and 3
3. 3 and 3
4. 6 and 6
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Two products X and Y are formed in the following reaction sequence.
The suitable method that can be used for the separation of products X and Y is:
1. Sublimation
2. Differential extraction
3. Continuous extraction
4. Fractional distillation
The suitable method that can be used for the separation of products X and Y is:
1. Sublimation
2. Differential extraction
3. Continuous extraction
4. Fractional distillation
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