3) Assertion – Reason questions.
The following questions consist of two statements Assertion (A) and Reasons (R). Answer these question
selecting the appropriate option given below
(a) Both A and Rare true and R is the correct explanation of A
(b) Both A and Rare true and R is not the correct explanation of A
(C) A is true but R is false.
(d) A is false but R is true.
1. (A) The flash of lightning is seen before the sound of thunder is heard,
(R) Speed of sound is greater than the speed of light.
2.(A) Silver bromide is stored in dark coloured bottles in laboratories.
(R)Silver bromide undergoes photochemical decomposition in the presence of sunlight.
3.(A) The aqueous CuSO4 solution is acidic in nature.
(R) It is formed by strong base and weak acid.
4.(A) The energy released during cellular respiration is immediately used to synthesis ATP molecule
(R) ATP is the energy currency for few cellular processes,
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