During the electrolysis of H₂O, volume of H₂ and O₂ are released in the ratio
Options
(a) 2:16 (b) 16:1 (c) 8:1 (d) 2:1
Correct Answer:
2:1
Explanation:
No explanation available. Be the […]
The number of water molecules in gypsum and in plaster of paris are respectively
Options
(a) 2 and 1/2 (b) 5 and 2 (c) 2 and 1 (d) 7 and 2
Correct Answer: […]
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: […]
When a strong beam of light is passed through a colloidal solution, the light will
Options
(a) give a rainbow (b) be reflected (c) be scattered (d) pass unchanged
Correct Answer:
be scattered
Aqueous solution of Cu (II) gives an intense blue solution with ammonia,which is due to
Options
(a) [Cu(NH₃)₄]²⁺ (b) Cu(OH)₂ (c) [Cu(H₂O₆)]²⁺ (d) Cu(NH₃)₂
Correct Answer:
[Cu(NH₃)₄]²⁺
Explanation:
No explanation available. Be the […]
The coordination number of an atom in the simple cubic unit cell in a crystal lattice is
Options
(a) 3 (b) 2 (c) 4 (d) 6
Correct Answer:
6
Explanation:
No explanation available. […]
When river water meets sea water delta formation takes place. This is due to the phenomenon of
Options
(a) electrophoresis (b) dialysis (c) coagulation (d) adsorption
Correct Answer:
coagulation
Explanation:
No explanation available. […]
The two polypeptide chains present in insulin contain which of the following number of amino acids
Options
(a) 18,12 (b) 30,21 (c) 20,21 (d) 25,16
Correct Answer:
30,21
Explanation:
No explanation available. Be […]
Amino acids,Which build up proteins, have both the carboxylic and amino groups. These amino acids are
Options
(a) α – amino acids (b) β – amino acids (c) γ – amino acids (d) […]
The hydrogen ion concentration in mol/dm, in a 0.2 M solution of a weak acid HA (Ka = 2 x 10⁻⁵) is close to
Options
(a) 2 x 10⁻⁵ (b) 2 x 10⁻⁴ […]
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