The empirical formula of an acid is CH₂O₂ , the probable molecular formula of acid may be
Options
(a) CH₂O (b) CH₂O₂ (c) C₂H₄O₂ (d) C₃H₆O₄
Correct Answer:
CH₂O₂
Explanation:
The molecular formula […]
Vapour density of a gas is 22. What is its molecular weight
Options
(a) 33 (b) 22 (c) 44 (d) 11
Correct Answer:
44
Explanation:
No explanation available. Be the first to write […]
If heat of formation of C + O₂ → 2CO is ΔH = -110.5 kcal,then heat of combustion of carbon is
Options
(a) -94 kcal/mol (b) 110.5 kcal/mol (c) 16.5 kcal/mol (d) 15 […]
When iodine is dissolved in CCl₄, the resulting colour is
Options
(a) brown (b) violet (c) yellow (d) bluish green
Correct Answer:
violet
Explanation:
No explanation available. Be the first to write the […]
Which of the following reaction is endothermic
Options
(a) N₂ + O₂ → 2NO (b) H₂ + Cl₂ → 2HCl (c) H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O (d) none of these
Correct […]
In the formation of [Ni(CN)₄]²⁻, the type of hybridisation involved is
Options
(a) sp² (b) sp³d (c) dsp² (d) sp³d
Correct Answer:
dsp²
Explanation:
No explanation available. Be the first to write the […]
CuSO₄ dissolves in NH₃ due to the formation of
Options
(a) Cu(OH)₂ (b) Cu[(NH₃)₄]SO₄ (c) Cu[(NH₃)₄(OH)₂] (d) CuO
Correct Answer:
Cu[(NH₃)₄(OH)₂]
Explanation:
NH₃+ H₂O→ NH₄OH CuSO₄ + NH₄OH → Cu(OH)₂ + (NH₄)₂ SO₄ […]
Which of the following has lowest pH value
Options
(a) 1 M HCl (b) 1 M NaOH (c) 1 M H₂SO₄ (d) 1 M C₂H₅OH
Correct Answer:
1 M H₂SO₄
Explanation:
No explanation […]
The turbidity of a polymer solution measures the
Options
(a) light absorbed by the solution (b) light transmitted by the solution (c) light scattered by the solution (d) all of these
Correct Answer: […]
Which of the following undergoes sublimation
Options
(a) ZnCl₂ (b) CuCl₂ (c) AgCl (d) NH₄Cl
Correct Answer:
NH₄Cl
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
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