Which of the following shows electrical conduction?
Options
(a) Sodium (b) Potassium (c) Diamond (d) Graphite
Correct Answer:
Graphite
Explanation:
No explanation available. Be the first to write the explanation for this question […]
NaOH is prepared by the electrolysis of
Options
(a) aqueous solution of sodium chloride with platinum electrode (b) sodium chloride solution with graphite anode and iron cathode (c) sodium carbonate with platinum electrodes […]
This radical can be identified by Borax bead test is
Options
(a) Mg²⁺ (b) Ca²⁺ (c) Cu⁺ (d) Cu²⁺
Correct Answer:
Cu²⁺
Explanation:
No explanation available. Be the first to write the explanation […]
Baking soda or baking powder is
Options
(a) washing soda (b) caustic soda (c) soda ash (d) sodium bicarbonate
Correct Answer:
sodium bicarbonate
Explanation:
No explanation available. Be the first to write the […]
How much quick lime can be obtained from 25g of CaCO₃?
Options
(a) 56 g (b) 14 g (c) 60 g (d) 28 g
Correct Answer:
14 g
Explanation:
No explanation available. Be […]
Which of the following has a tendency for covalent compound formation
Options
(a) Na (b) Mg (c) Ca (d) Ba
Correct Answer:
Mg
Explanation:
No explanation available. Be the first to write the […]
Which of the following is not efflorescent?
Options
(a) NaOH (b) CuSO₄ (c) MgSO₄ (d) Hydrated CuSO₄
Correct Answer:
Hydrated CuSO₄
Explanation:
No explanation available. Be the first to write the explanation for […]
Potassium is stored in
Options
(a) alcohol (b) water (c) kerosene (d) liquid ammonia
Correct Answer:
kerosene
Explanation:
On exposure to moist air , K tarnish quickly . Therefore K is always kept under […]
Formula of Plaster of Paris is
Options
(a) CaSO₂.(1/2)H₂O (b) CaSO₄.H₂O (c) CaSO₄.(1/3)H₂O (d) CaSO₄.2H₂O
Correct Answer:
CaSO₂.(1/2)H₂O
Explanation:
Plaster of Paris is CaSO₄. 1/2 H₂O. It is formed by heating the gypsum. CaSO₄. […]
One mole of magnesium nitride on reaction with excess of water gives
Options
(a) 1 mole of ammonia (b) 1 mole of nitric acid (c) 2 mole of nitric acid (d) 2 mole […]
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