64g
32g
7.1g
6.4g
3.2g
Correct answer is B
Al has valency of 3+:
3F will deposit 27g
xF will deposit 9g
cross multiply → \(\frac{9g * 3F}{27g}\)
: 1F = 9g
Cu has valency of 2+:
2F will deposit 64g
1F will deposit xg
cross multiply → \(\frac{64g * 1F}{2F}\)
: 1F = 32g
The following are s-block elements except
lithium
magnesium
potassium
calcium
aluminium
Correct answer is E
No explanation has been provided for this answer.
plastic sulphur
amorphous sulphur
rhombic sulphur
monoclinc sulphur
colloidal sulphur
Correct answer is C
rhombic Sulphur is prepared by allowing a saturated solution of Sulphur in carbon (iv) sulphide to evaporate slowly and crystals will gradually be deposited.
1/2 x 6.02 x 10 23
1 x 6.02 x10 23
2 x 6.02 x 10 23
3x 6.02 x 10 23
4x 6.02 x 10 23
Correct answer is B
No explanation has been provided for this answer.
Which of the following is used extensively in manufacturing photographic chemicals?
Aluminium chloride
Zinc chloride
Silver chloride
Mercury (ll) chloride
lron (ll) chloride
Correct answer is C
No explanation has been provided for this answer.