Chemistry - Online Test
Q1. Which of the following is an analgesic?
Answer : Option C
Explaination / Solution:
No Explaination.
Q2. Concentration
of the Ag+ ions in a saturated solution of Ag2 C2O4
is 2.24 ×10-4mol L-1
solubility product of Ag2 C2O4 is
Answer : Option D
Explaination / Solution:
Ag2C2O4
↔ 2Ag+
+ C2O42-
[ Ag+ ] = 2.24 × 10-4
mol L-1
[ C2 O42-
] = { 2.24×10-4 }/2 = mol L-1
= 1.12×10-4 mol L-1
Ksp = [Ag+]2[C2O42-]
= (2.24×10-4 mol-4 L-1
)2 (1.12×10-4 mol L-1)
= 5.619×10-12mol3
L-3
Q3. The number of electrons that have a total charge of 9650 coulombs is
Answer : Option C
Explaination / Solution:
1F = 96500 C = 1 mole of e− = 6.023 ×1023
e−
∴ 9650 C = [ 6.22 ×1023 / 96500 ] × 9650 = 6.022×1022
= 6.022×1022
Q4. Which of the following is incorrect for physisorption?
Answer : Option B
Explaination / Solution:
The incorrect statement is option
(b)
Physisorption is an exothermic
process. Hence increase in temperature decreases the physisorption.
Q5. Which of the following compounds on reaction with methyl magnesium bromide will give tertiary alcohol.
Answer : Option C
Explaination / Solution:
Q6. The segments of leech are known as
Answer : Option A
Explaination / Solution:
No Explaination.
Q7. Water which is absorbed by roots is transported to aerial parts of the plant through
Answer : Option D
Explaination / Solution:
No Explaination.
Q8. The formation of cyanohydrin from acetone is an example of
Answer : Option D
Explaination / Solution:
No Explaination.
Q9. Site for processing of vision, hearing, memory, speech, intelligence and thought is
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. The hormone which has positive effect on apical dominance is:
Answer : Option B
Explaination / Solution:
No Explaination.
