Permanent hardness of water is due to the presence of
Options
(a) bicarbonate of sodium and potassium (b) chlorides and sulphates of sodium and potassium (c) chlorides and sulphates of calcium and magnesium […]
Which among the following is kinetically inert towards water?
Options
(a) Na (b) Be (c) Ca (d) K
Correct Answer:
Be
Explanation:
No explanation available. Be the first to write the explanation for […]
Zeolite used to soften hardness of water is, hydrated
Options
(a) potassium aluminium borate (b) sodium aluminium silicate (c) zinc aluminium borate (d) zinc aluminium silicate
Correct Answer:
sodium aluminium silicate
Explanation:
The […]
Which one of the following statements is incorrect with regard to ortho and para-dihydrogen
Options
(a) They are nuclear spin isomers (b) The ortho isomer has zero nuclear spin whereas the para isomer […]
The hybridization of oxygen atom in H₂O₂ is
Options
(a) sp³d (b) sp (c) sp² (d) sp³
Correct Answer:
sp³
Explanation:
No explanation available. Be the first to write the explanation for this […]
The bond angle in water is
Options
(a) 120⁰ (b) 109.5⁰ (c) 107⁰ (d) 104.5⁰
Correct Answer:
104.5⁰
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
The H – O – O bond angle in H₂O₂ is
Options
(a) 107.28⁰ (b) 109.28⁰ (c) 97⁰ (d) 106⁰
Correct Answer:
97⁰
Explanation:
No explanation available. Be the first to write the […]
The normality of 10 volume hydrogen peroxide is
Options
(a) 0.176 (b) 3.52 (c) 1.78 (d) 0.88
Correct Answer:
1.78
Explanation:
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Water softening by Clark’s process uses
Options
(a) calcium bicarbonate (b) sodium bicarbonate (c) potash alum (d) calcium hydroxide
Correct Answer:
calcium hydroxide
Explanation:
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Action of water or dilute mineral acids on metals can give
Options
(a) monohydrogen (b) tritium (c) dihydrogen (d) trihydrogen
Correct Answer:
dihydrogen
Explanation:
No explanation available. Be the first to write the […]
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