- 1(current)
Q. No.1. 4 g He
2. 46 g Na
3. 0.40 g Ca
4. 12 g He
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the following:
| COLUMN I | COLUMN II | ||
| A. | 88 g of CO2 | 1. | 0.25 mol |
| B. | 6.022×1023 molecules of H2O | 2. | 2 mol |
| C. | 5.6 L of O2 at STP | 3. | 3 mol |
| D. | 96 g of O2 | 4. | 1 mol |
| A | B | C | D | |
| 1. | 2 | 4 | 1 | 3 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven below are two statements:
| Assertion (A): | One atomic mass unit is defined as one-twelfth of the mass of one carbon-12 atom. |
| Reason (R): | The carbon-12 isotope is the most abundant isotope of carbon and has been chosen as the standard. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| Assertion (A): | The combustion of 16 g of methane gives 18 g of water. |
| Reason (R): | In the combustion of methane, water is one of the products. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOne mole of oxygen gas at STP is equal to:
| (a) | 6 .022× 1023 molecules of oxygen |
| (b) | 6.022 × 1023 atoms of oxygen |
| (c) | 16 g of oxygen molecule |
| (d) | 32 g of oxygen |
Choose the correct answer from the option given below:
| 1. | (a) and (b) | 2. | (a) and (c) |
| 3. | (a) and (d) | 4. | (c) and (d) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following pairs have the same number of atoms?
| (a) | 16 g of O2(g) and 4 g of H2(g) |
| (b) | 16 g of O2 and 44 g of CO2 |
| (c) | 28 g of N2 and 32 g of O2 |
| (d) | 12 g of C(s) and 23 g of Na(s) |
1. (a), (b)
2. (b), (c)
3. (c), (d)
4. (b), (d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology16 g of oxygen has the same number of molecules as in:
(a) 16 g of CO
(b) 28 g of N2
(c) 14 g of N2
(d) 1.0 g of H2
1. (a), (b)
2. (b), (c)
3. (c), (d)
4. (b), (d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | 16 g of gas |
| 2. | 22.9 L of gas |
| 3. | dioxygen molecules |
| 4. | 11.2 L of gas |
The incorrect statements regarding 1 mole of dioxygen gas at STP from the above four statements are:
| 1. | (a, b, c) | 2. | (a, b, d) |
| 3. | (b, c, d) | 4. | (a, c, d) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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