Farmers neutralise the effect of Acidity on the soil by adding –
Anonymous Quiz
47%
Slaked lime
21%
Gypsum
19%
Caustic soda
14%
Baking soda
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Which of the following are present in a dilute Aqueous solution of hydrochloric acid?
Anonymous Quiz
45%
H3O + Cl–
24%
H3O + OH–
14%
Cl– + OH–
17%
Unionised HCl
CuSO4.5H2O: In this Compound, the water molecule is called –
Anonymous Quiz
13%
Pure water
69%
Water of crystallisation
13%
Soda water
5%
None of these
Which of the following salts does not contain water of crystallisation?
Anonymous Quiz
24%
Blue vitriol
40%
Baking soda
15%
Washing soda
20%
Gypsum
An aqueous solution turns the red litmus solution blue. Excess addition of which of the following solutions would reverse the change?
Anonymous Quiz
21%
Baking powder
25%
Lime
24%
Ammonium hydroxide solution
30%
Hydrochloric acid
In which pH range does our body work to survive in the atmosphere?
Anonymous Quiz
29%
5.5 to 8.5
52%
7.0 to 7.8
12%
2.3 to 7.0
7%
7.5 to 12.5
What is the chemical formula of POP (Plaster of Paris)?
Anonymous Quiz
20%
CaSO4.2H2O
16%
CaSO4.3H2O
58%
CaSO4.1/2H2O
6%
CaCO3.1/2H2
When a base reacts with a metal, it forms a salt, and hydrogen gas is released. By what method can the presence of hydrogen be detected?
Anonymous Quiz
19%
by water
22%
by litmus paper
13%
by methyl orange
46%
by a burning candle
At what temperature is gypsum heated to form Plaster of Paris?
Anonymous Quiz
18%
35°C
20%
70°C
14%
80°C
49%
100°C
Sodium carbonate reacts with hydrochloric acid and produces –
Anonymous Quiz
43%
NaCl
10%
CO2
8%
H2O
40%
All of the above
Which acid is present in tamarind?
Anonymous Quiz
72%
Tartaric acid
13%
Oxalic Acid
8%
Lactic Acid
7%
Citric Acid
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