Which has maximum number of molecules
Which has maximum number of molecules
Options
(a) 7 gm N₂ (b) 2 gm H₂ (c) 16 gm NO₂ (d) 16 gm O₂
Correct Answer:
2 gm H₂
Explanation:
2 gm of H₂ […]
Basic Concepts of Chemistry
A 5 molar solution of H₂SO₄ is diluted from 1 liter to a volume of 10 litres
A 5 molar solution of H₂SO₄ is diluted from 1 liter to a volume of 10 litres, the normality of the solution will be
Options
(a) 1N (b) 0.1N (c) 5N (d) 0.5N
The maximum number of molecules is present in
The maximum number of molecules is present in
Options
(a) 15 L of H₂ gas at STP (b) 5L of N₂ gas as STP (c) 0.5 g of H₂ gas (d) 10 g […]
Amount of calcium oxide required, when it reacts with 852 g of P₄O₁₀ is
Amount of calcium oxide required, when it reacts with 852 g of P₄O₁₀ is
Options
(a) 100g (b) 1008g (c) 108g (d) 1050g
Correct Answer:
1008g
Explanation:
6CaO + P₄O₁₀ →2Ca₃(PO₄)₂ 6(40+ 16) […]
The number of atoms in 0.1 mol of a triatomic gas is (Na = 6.02 x 10²³ mol⁻¹)
The number of atoms in 0.1 mol of a triatomic gas is (Na = 6.02 x 10²³ mol⁻¹)
Options
(a) 6.026 x 10²² (b) 1.806 x 10²³ (c) 3.6 x 10²³ (d) 1.8 […]
An aqueous solution of glucose is 10% in strength. The volume in which 1g mole
An aqueous solution of glucose is 10% in strength. The volume in which 1 g mole of it is dissolved wil be
Options
(a) 18 L (b) 92 L (c) 0.9 L (d) […]
The weight of one molecule of a compound C₆₀H₁₂₂ is
The weight of one molecule of a compound C₆₀H₁₂₂ is
Options
(a) 1.2 x 10⁻²° gram (b) 1.4 x 10⁻²¹ gram (c) 5.025 x 10²³ gram (d) 6.023 x 10²³ gram
Correct Answer: […]
If 1 mL of water contains 20 drops then number of molecules in a drop of water
If 1 mL of water contains 20 drops then number of molecules in a drop of water is
Options
(a) 6.023 x 10²³ molecules (b) 1.376 x 10²⁶ molecules (c) 1.344 x 10¹⁸ […]
The number of oxygen atoms in 4.4g of CO₂ is
The number of oxygen atoms in 4.4g of CO₂ is
Options
(a) 1.2 x 10²³ (b) 6 x 10²² (c) 6 x 10²³ (d) 12 x 10²³
Correct Answer:
1.2 x 10²³
Explanation: […]
Assuming fully decomposed, the volume of CO₂ released at STP on heating 9.85g
Assuming fully decomposed, the volume of CO₂ released at STP on heating 9.85 g of BaCO₃(Atomic mass Ba=137) will be
Options
(a) 2.24 L (b) 4.96 L (c) 1.12L (d) 0.84L
Correct Answer: […]