set 3 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) only salt
(b) both salt and hydrogen gas
(c) only hydrogen gas
(d) none of these
The correct answers to the above question in:
Answer: (b)
e.g. Na + HCl ⟶ NaCl + $1/2H_2$
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Question : 1
Which of the following pairs of substances are chemically same?
a) Dead burnt plaster and gypsum
b) Both the above
c) Lime water and milk of lime
d) None of the above
Answer »Answer: (c)
Question : 2
Which one of the following is coated on the photographic plate?
a) Silver bromide
b) Silver chloride
c) Silver oxide
d) Silver iodide
Answer »Answer: (a)
Question : 3
Which of the following acid do not contain Oxygen?
a) Sulphuric Acid
b) Hydrochloric Acid
c) Nitric Acid
d) All of the above
Answer »Answer: (b)
Question : 4
Match Column-I with Column-II:
Column-I | Column-II |
A. Titanium | P. Coinage metal |
B. Palladium | Q. Fuel |
C. Uranium | R. Catalyst |
D. Platinum | S. Strategic metal |
a) A – R; B – S; C – Q; D – P
b) A – S; B – R; C – Q; D – P
c) A – P; B – R; C – Q; D – S
d) A – S; B – Q; C – R; D – P
Answer »Answer: (b)
Question : 5
Universal indicator solution is named as such because
a) it has a universal appearance
b) it can be used for entire pH range
c) it is available universally
d) all the above are correct
Answer »Answer: (b)
It can be for entire pH range.
Question : 6
Neutral water with pH about 7 becomes slightly acidic when aerated. This is because
a) ultraviolet radiation dissociates water molecules and makes water acidic
b) oxygen from air is dissolved in the water which makes the water acidic
c) dirt, which get contaminated with the water during aeration makes the water acidic
d) carbon-dioxide from air is dissolved
Answer »Answer: (d)
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