Water is used as a coolant in a nuclear reactor because of its:
1. high thermal expansion coefficient
2. high specific heat capacity
3. low density
4. low boiling point
Subtopic: Nuclear Binding Energy |
68%
From NCERT
NEET - 2024
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The pitch of an error-free screw gauge is \(1~\text{mm},\) and there are \(100\) divisions on the circular scale. While measuring the diameter of a thick wire, the pitch scale reads \(1~\text{mm},\) and \(63^\text{rd}\) division on the circular scale coincides with the reference line. The diameter of the wire is:
1. \(1.63 ~\text{cm}\)
2. \(0.163 ~\text{cm}\)
3. \(0.163~\text m\)
4. \(1.63 ~\text m\)
1. \(1.63 ~\text{cm}\)
2. \(0.163 ~\text{cm}\)
3. \(0.163~\text m\)
4. \(1.63 ~\text m\)
Subtopic: Measurement & Measuring Devices |
71%
From NCERT
NEET - 2024
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The following data is for a reaction between reactants A and B:
The order of the reaction with respect to A and B, respectively are:
1. 1, 0
2. 0, 1
3. 1, 2
4. 2, 1
| Rate mol \(L^{-1}s^{-1}\) |
[A] | [B] |
| \(2 \times10^{-3}\) | 0.1 M | 0.1 M |
| \(4 \times10^{-3}\) | 0.2 M | 0.1 M |
| \(1.6 \times10^{-2}\) | 0.2 M | 0.2 M |
The order of the reaction with respect to A and B, respectively are:
1. 1, 0
2. 0, 1
3. 1, 2
4. 2, 1
Subtopic: Order, Molecularity and Mechanism |
79%
From NCERT
NEET - 2024
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Let us consider two solenoids \(A\) and \(B,\) made from the same magnetic material of relative permeability \(\mu_{r}\) and equal area of cross-section. Length of \(A\) is twice that of \(B\) and the number of turns per unit length in \(A\) is half that of \(B.\) The ratio of self inductances of the two solenoids, \(L_A:L_B\) is:
1. \(1:2\)
2. \(2:1\)
3. \(8:1\)
4. \(1:8\)
1. \(1:2\)
2. \(2:1\)
3. \(8:1\)
4. \(1:8\)
Subtopic: Self - Inductance |
57%
From NCERT
NEET - 2024
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When the output of an OR gate is applied as input to a NOT gate, then the combination acts as a:
1. NAND gate
2. NOR gate
3. AND gate
4. OR gate
1. NAND gate
2. NOR gate
3. AND gate
4. OR gate
Subtopic: Logic gates |
77%
From NCERT
NEET - 2024
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is correct but Statement II is incorrect
2. Statement I is incorrect but statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
| Statement I : | Propene on treatment with diborane gives an addition product with the formula \(((CH_3)_2-CH)_3 -B\) |
| Statement II : | Oxidation of \(((CH_3)_2-CH)_3 -B\) with hydrogen peroxide in presence of \(NaOH\) gives propan-2-ol. |
1. Statement I is correct but Statement II is incorrect
2. Statement I is incorrect but statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
From NCERT
NEET - 2024
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The interference pattern can be observed due to the superposition of the following waves:
A. \(y=a\sin\omega t\)
B. \(y=a\sin2\omega t\)
C. \(y=a\sin\left(\omega t-\phi\right)\)
D. \(y=a\sin3\omega t\)
Choose the correct answer from the options given below:
A. \(y=a\sin\omega t\)
B. \(y=a\sin2\omega t\)
C. \(y=a\sin\left(\omega t-\phi\right)\)
D. \(y=a\sin3\omega t\)
Choose the correct answer from the options given below:
| 1. | B and C | 2. | B and D |
| 3. | A and C | 4. | A and B |
Subtopic: Superposition Principle |
71%
From NCERT
NEET - 2024
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Baeyer's reagent is:
1. Acidic potassium permanganate solution
2. Acidic potassium dichromate solution
3. Cold, dilute, aqueous solution of potassium permanganate
4. Hot, concentrated solution of potassium permanganate
1. Acidic potassium permanganate solution
2. Acidic potassium dichromate solution
3. Cold, dilute, aqueous solution of potassium permanganate
4. Hot, concentrated solution of potassium permanganate
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
77%
From NCERT
NEET - 2024
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Which of the following molecules has "NON ZERO" dipole moment value?
| 1. | \(\mathrm{CCl_4}\) | 2. | \(\mathrm{HI}\) |
| 3. | \(\mathrm{CO_2}\) | 4. | \(\mathrm{BF}_3\) |
Subtopic: Polarity |
78%
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NEET - 2024
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Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
63%
From NCERT
NEET - 2024
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