- 1(current)
Q. No.The number of significant figures in the following numbers is:
| (I). | 161 cm |
| (II). | 0.0161 |
| (III). | 1.61 |
1. 3, 3, 3
2. 3, 4, 3
3. 3, 2, 3
4. 3, 4, 4
Subtopic: Introduction |
74%
From NCERT
AIPMT - 1998
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NEET 2025 - Target Batch
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If the density of the solution is 3.12 g ml-1, then what will be the mass of the 1.5 ml solution in two significant figures?
| 1. | \(4.4~\mathrm{g}\) | 2. | \(4680 \times 10^{3} ~\mathrm{g}\) |
| 3. | \(4.7~\mathrm{g}\) | 4. | \(46.80~\mathrm{g}\) |
Subtopic: Introduction |
79%
From NCERT
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The correct match is:
Codes:
| List I | List II | ||
| a. | Micro | i. | m |
| b. | Mega | ii. | m |
| c. | Giga | iii. | m |
| d. | Femto | iv. | m |
| a | b | c | d | |
| 1. | i | iv | iii | ii |
| 2. | iii | iv | ii | i |
| 3. | ii | iii | iv | i |
| 4. | i | iii | iv | ii |
Subtopic: Introduction |
87%
From NCERT
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Hints
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Match the following physical quantities with units.
| Physical quantity | Unit | ||
| A. | Molarity | 1. | mol kg–1 |
| B. | Molality | 2. | mol L–1 |
| C. | Pressure | 3. | Candela |
| D. | Luminous intensity | 4. | Pascal |
Codes:
| A | B | C | D | |
| 1. | 1 | 4 | 2 | 3 |
| 2. | 2 | 1 | 4 | 3 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
Subtopic: Introduction |
94%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
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NEET 2025 - Target Batch
Consider the two statements:
| Statement I: | Scientific notation for 0.00016 is \(1.6 \times 10^{-3} \). |
| Statement II: | The volume of water to be added to change the molarity of 200 mL 0.5 M aqueous solution to 0.1 M is 800 mL. |
| 1. | Statement I is correct, Statement II is correct. |
| 2. | Statement I is incorrect, Statement II is correct. |
| 3. | Statement I is correct, Statement II is incorrect. |
| 4. | Statement I is incorrect, Statement II is incorrect. |
Subtopic: Introduction |
53%
From NCERT
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Hints
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Which, of the following, laws of chemical combination is followed by \(N_2O~, NO \) and \(N_2O_3\) ?
1. Law of conservation of mass
2. Law of multiple proportions
3. Law of constant proportions
4. Gay Lussac's law of constant volume
1. Law of conservation of mass
2. Law of multiple proportions
3. Law of constant proportions
4. Gay Lussac's law of constant volume
Subtopic: Introduction |
80%
From NCERT
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- 1(current)
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