set 1 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 4 EXERCISES
The following question based on acids, bases, salts and metals topic of general science mcq
(a) Ferric chloride
(b) Sodium chloride
(c) Copper sulphate
(d) Sodium acetate
The correct answers to the above question in:
Answer: (d)
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Read more chemistry ncert Based General Science Questions and Answers
Question : 1
The chemical formula of washing soda is
a) Na2CO3
b) NaHCO3
c) NaOH
d) Ca(OH)2
Answer »Answer: (a)
Question : 2
To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is
a) neutral
b) basic
c) acidic
d) corrosive
Answer »Answer: (b)
Question : 3
pH value shows the Numeric value of
a) Analysing the nature of solution acidic or basic
b) Analysing the intensity of an earthquake
c) Quality of chemical used for developing photographic negatives
d) Analysing for checking purity of milk
Answer »Answer: (a)
Question : 4
The chemical name of bleaching powder is
a) calcium oxychloride
b) calcium chloroxide
c) calcium chloride
d) none of above
Answer »Answer: (a)
Question : 5
Plaster of Paris hardens by –
a) changing into CaCO3
b) combining with water
c) giving of CO2
d) giving out water
Answer »Answer: (b)
$CaSO_4.{1/2}H_2O+3/2H_2O ⟶ {CaSO_4}.2H_2O$
Question : 6
Antacids contain –
a) weak acid
b) strong base
c) weak base
d) strong acid
Answer »Answer: (c)
Antacids are weak bases which are given when a patient is suffering from acidity. These antacids neutralises the acid and give relief to patient.
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