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The number of oxygen atoms in 4.4 g of CO₂ approx.
1. 1.2 × 10²³
2. 6 × 10²²
3. 6 × 10²³
4. 12 × 10²³

The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is
1. 6.023 × 10¹⁹
2. 1.084 × 10¹⁸
3. 4.84 × 10¹⁷
4. 6.023 × 10²³

The number of electrons in a mole of hydrogen molecule is
1. 6.02 × 10²³
2. 12.046 × 10²³
3. 3.0115 × 10²³
4. Indefinite

1 gm butane (C₄H₁₀) is burnt with excess of O₂ to form CO₂. The approximate mass of CO₂ produced is
1. 1 gm
2. 2 gm
3. 3 gm
4. 4 gm

2 gm Iron pyrite (FeS₂) is burnt with O₂ to form Fe₂O₃ and SO₂. The mass of SO₂ produced is
(Fe = 56, S = 32, O = 16)
1. 2 gm
2. 2.13 gm
3. 4 gm
4. 4.26 gm

800 ml of a mixture of O₂ and O₃ weight 1.2 gm at NTP. The volume of O₃ in the mixture is
1. 80 ml
2. 160 ml
3. 200 ml
4. 400 ml

9.8 gm KClO₃ is decomposed then weight loss was 0.384 gm. The percentage of KClO₃ decomposed is
1. 10%
2. 20%
3. 40%
4. 100%

10 gm carbon reacts with 100 gm Cl₂ to form CCl₄. The maximum weight of CCl₄ formed is
1. 128 gm
2. 94.22 gm
3. 108.45 gm
4. 54.22 gm

Which has maximum number of atoms at NTP?
1. 1 ml CH₄
2. 1 ml N₂
3. 1 ml H₂
4. 1 ml H₂O

1 gm of a mixture of Na₂CO₃ and NaCl is completely reacted with 100 ml N/10 HCl. The percentage of NaCl in the mixture is
1. 25%
2. 47%
3. 53%
4. 82%

0.5 gm of an oxalate sample is dissolved in water and diluted upto 100 ml. 10 ml of this solution is completely oxidised with 15 ml N/20 KMnO₄ in acidic medium. The percentage purity of sample is
1. 33%
2. 44%
3. 66%
4. 88%

2.75 gm Na₂CO₃. xH₂O is dissolved in water and diluted upto 250 ml. 10 ml of this solution is completely neutralised with 15 ml N/19.5 HCl. The value of ‘x’ is
1. 2
2. 5
3. 8
4. 10

The number of carbon atoms present in 0.35 mol of glucose (C₆H₁₂O₆) are
1. 3.61×10²⁴
2. 3.61×10²³
3. 2.11×10²³
4. 1.26×10²⁴

400 g of 20% solution is cooled down then 50 g of solute is precipitated, the concentration of remaining solution is
1. 7.5%
2. 8.57%
3. 10%
4. 12%

10 g of a mixture of Cu₂S and CuS is reacted with 150 ml 1M KMnO₄ producing Cu²⁺, Mn²⁺ and SO₂. The excess of KMnO₄ is completely reacted with 175 ml 1M Fe²⁺ in acidic medium. Percentage of CuS in the mixture will be
1. 37%
2. 47%
3. 57%
4. 67%

What mass of calcium chloride in grams would be enough to produce 14.35 g of AgCl?
(At. mass Ca = 40; Ag = 108)
1. 5.55g
2. 8.295g
3. 16.59g
4. 11.19g

In Haber process 30 L of dihydrogen and 30L of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will be the composition of gaseous mixture under the aforesaid conditions in the end?
1. 20L of ammonia, 25L of nitrogen, 15L of hydrogen
2. 20 L of ammonia, 20L of nitrogen, 20L of hydrogen
3. 10L of ammonia, 25L of nitrogen, 15L of hydrogen
4. 20L of ammonia, 10L of nitrogen, 30L of hydrogen

60g of a compound on analysis gave 24g C, 4g H and 32g O. The empirical formula of the compound is :
1. C₂H₄O₂
2. C₂H₂O₂
3. CH₂O₂
4. CH₂O

Dehydration of cyclohexanol yields cyclohexene in 75% yield. How much of cyclohexene will be obtained from 100 g of cyclohexanol?
1. 75.0 g
2. 61.5 g
3. 82.0 g
4. 41.0 g

How much CaCO₃ (in grams) should be decomposed to get enough CO₂ which can convert 0.1 mol of Na₂CO₃ into NaHCO₃ ?
1. 100.0 g
2. 20.0 g
3. 10.0 g
4. 5.0 g