Question

. Choose the correct option:
(1) When a single reactant breaks down to give simple product which type of reaction is this?
(a) Dispalcement reaction b) decomposition reaction
(c) Redox Reaction
(d) Double Displacement reaction
(2) The number of covalent bonds present in pentane is -
(a) 5 (b) 12
(d) 17
(3) Resin and gum are the
substances of plants.
(a) excretion (b) nutritive (c) constitutional
(4) Which of the following is the ultimate source of energy on the earth?
(a) Solar (b) Wind (c) Ocean (d) Fossil Fuel
(5) The absolute refractive index of any medium is
(a) 1
(b) > 1
)
(c) <1 (d) zero
(6) Which type of image of an object cannot be obtained by a convex lens?
(a) Real and diminished
(b) Real and enlarged
(c) Virtual and diminished
(d) Virtual and enlarged
(c) 16
(d) reserve
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Answer 1

Answer:

1) decomposition

2)16

3)excretion

4)solar

5)>1

6)virtual and diminished

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