11
Match the sources in
Column II with the product of
Column I .
Column I (Product) Column II (Source)
a. Formic acid
1. Lemon
b. Citric acid
2. Tamarind
c. Tartaric acid
3. Ants
A)
a-3, b-2, c-1
B)
a-3, b-1, c-2
C)
a-2, b-3, c-1
D)
a-2, b-1, c-3
Answer & Solution
Answer: Option
B
12
The litmus solution is extracted from the . . . . . . . .
A)
lichen
B)
hydrangea
C)
geranium
D)
petunia
Answer & Solution
Answer: Option
A
13
If the pH of a salt is zero, it is a salt of . . . . . . . .
A)
Strong acid and weak base
B)
Weak acid and strong base
C)
Strong acid and strong base
D)
Weak acid and weak base
Answer & Solution
Answer: Option
A
14
What is the dominant chemical present in vinegar?
A)
Malic acid
B)
Formic acid
C)
Sulphuric acid
D)
Ethanoic acid
Answer & Solution
Answer: Option
D
15
Milk tastes sour when it is left in open for sometime. This happens due to the formation of
A)
lactic acid
B)
citric acid
C)
acetic acid
D)
carbonic acid
Answer & Solution
Answer: Option
A
16
Which one of the following is an amphoteric oxide?
A)
CO2
B)
SO2
C)
Al2 O3
D)
CuO
Answer & Solution
Answer: Option
C
17
Which one of the following does not contain COOH group?
A)
Citric acid
B)
Lactic acid
C)
Tartaric acid
D)
Ascorbic acid
Answer & Solution
Answer: Option
D
18
Which one of the following is a similarity between acids and bases?
A)
They are used as preservatives
B)
They have pH less than 7
C)
Process of mixing acid or base with water is exothermic
D)
They are bitter
Answer & Solution
Answer: Option
C
19
When we cut an onion, the synthase enzyme converts the amino acid sulfoxide of the onion into which acid?
A)
Citric acid
B)
Nitric acid
C)
Sulphuric acid
D)
Sulfenic acid
Answer & Solution
Answer: Option
D
20
. . . . . . . . can dissolve gold.
A)
Glycerin
B)
Petroleum ether
C)
Methanol
D)
Aquaregia
Answer & Solution
Answer: Option
D
