Which one of the following is the heaviest
Which one of the following is the heaviest
Options
(a) One molecule of oxygen (b) One molecule of Sulphur trioxide (c) 100 amu of uranium (d) 10 moles of Hydrogen
Correct Answer:
10 […]
Basic Concepts of Chemistry
Vapour density of a metal chloride is 77. If its equivalent weight is 3, its atomic
Vapour density of a metal chloride is 77. If its equivalent weight is 3, its atomic weight will be
Options
(a) 9 (b) 6 (c) 3 (d) 12
Correct Answer:
12
Explanation:
No […]
The number of valence electrons in 4.2g of N³⁻ ion is
The number of valence electrons in 4.2g of N³⁻ ion is
Options
(a) 1.6 x Avagadro’s number (b) 2.6 x Avagadro’s number (c) 2.4 x Avagadro’s number (d) 4.2 x Avagadro’s number
Correct […]
The volume of water to be added to N/2 HCl to prepare 500 cm³ of N/10 solution is
The volume of water to be added to N/2 HCl to prepare 500 cm³ of N/10 solution is
Options
(a) 450 cm³ (b) 100 cm³ (c) 45 cm³ (d) 400 cm³
Correct Answer: […]
The volume of water to be added to 100 cm³ of 0.5 N H₂SO₄ to get decinormal
The volume of water to be added to 100 cm³ of 0.5 N H₂SO₄ to get decinormal concentration is
Options
(a) 450 cm³ (b) 100 cm³ (c) 400 cm³ (d) 500 CM³
Correct […]
The amount of zinc required to produce 224mL of H₂ at STP on treatment with dilute H₂SO₄
The amount of zinc required to produce 224mL of H₂ at STP on treatment with dilute H₂SO₄ will be
Options
(a) 65 g (b) 0.065 g (c) 0.65 g (d) 6.5 g
Correct […]
Molar volume of CO₂ is maximum at
Molar volume of CO₂ is maximum at
Options
(a) NTP (b) 0⁰C and 2.0 atm (c) 127⁰C and 1 atm (d) 273⁰C and 2.0 atm
Correct Answer:
127⁰C and 1 atm
Explanation:
No […]
If 0.2g of an organic compound containing carbon, hydrogen, and oxygen on combustion
If 0.2g of an organic compound containing carbon, hydrogen, and oxygen on combustion, yielded 0.147g carbon dioxide and 0.12g water, what will be the content of oxygen in substance
Options
(a) 82.23% (b) […]
Copper occurs naturally as Cu-63 and Cu-65. Given Atomic Weight
Copper occurs naturally as Cu-63 and Cu-65. Given Atomic Weight of Carbon is 63.546, Which isotope is more abundant?
Options
(a) Cu-65 (b) Both Cu-63 and Cu-65 (c) Cu-63 (d) None
Correct Answer: […]
An organic compound containing C, H, N gave the following analysis
An organic compound containing C, H, N gave the following analysis: C=40%; H=13.33%; N=46.67%. Its empirical formula would be
Options
(a) C₂H₇N₂ (b) CH₅N (c) CH₄N (d) C₂H₇N
Correct Answer:
CH₄N
Explanation:
At […]