61. Which of the following chemical equation is incorrectly balanced ?
Match the following
Column -I Column -II
(i)
(ii)
(iii)
A. (i) - (q) (ii) - (p) (iii) - (q)
B. (i) - (r) (ii) - (q) (iii) - (p)
C. (i) - (p) (ii) - (q) (iii) - (r)
D. (i) - (p) (ii) - (q) (iii) - (p)
Answer : Option A
63. How many g of NaOH can be obtained by reaction of 1 Kg of
64. How much calcium oxide (CaO) can be obtained by heating 200 Kg of lime stone that is 95% pure
65. Calculate the amount of NaOH required to neutralize 100 mL 0.1M
A. 40 g
B. 0.4 g
C. 80 g
D. 0.8 g
Answer : Option D
Explanation :
→ 0.1M
→
2(40)g 98g
(?)
=
= 0.8 g
66. 3g of an oxide of a metal is converted into chloride and it yielded 5 g of chloride. Find the equivalent weight of the metal.
67. A compound contains two oxygen atoms, four carbon atoms and number of hydrogen atoms is double of carbon atoms. What is the density of vapour of this compound ?
A. 88
B. 44
C. 132
D. 72
Answer : Option B
Explanation :
→ M.F.
68. The number of molecules in 100 mL of each of
A.
B.
C.
D.
Answer : Option D
Explanation :
→ Equal volumes under identical conditions contain equal no. of molecules
69. Which of the following represents the formula of a compound which contains 26% nitrogen and 74% oxygen ?
70.