Science

Q.1. Fill in the blanks-
(i) Rusting of Iron is the example of . …………. reaction
(ii) We can see the objects in the presence of…..…
(iii) Greater the current in the wire stronger will be the….. produced.
(iv) 1 Horse power watt.
(v) Coal is the …... source of energy.

Ans. (i) slow, (ii) Light, (iii) magnetic area, (iv) 746, (v) non- Renewable


Q.2. Choose the correct alternative:
(i) Rhizobium is found in-
(a) maize root (b) gram root (c) branch of a plant (d) sugarcane root
(ii) The process of fusion of male gamete and female gamete is called-
(a) pollination (b) fertilization (c) cell maturation (d) cell elongation
(iii) "Quick Silver" is called-
(a) Ag (b) Al s-(c) Hg (d) Au
(iv) How many chambers are there in the heart of human-
(a) Two (b) Three (c) Four (d) Five
(v) Excretory products by kidney is-
(a) Ammonia (b) CO2 (c) Urine (d) Sweat

Ans.(i) (b) Ans.(ii) (b) Ans.(iii)(c) Ans.(iv) (c) Ans.(v) (c)