Science, asked by shivamkannoj, 4 months ago

40. We should follow 3 R’s which are –

a. Reduce, Reuse and Recycle c. Rejoin, Reunion and Recall

b. Return, Refund and Recall d. Republic, Retire and Reverse

41. Non – biodegradable waste included –

a. Polythene & plastic c. Metal

b. Glass d. Peel of fruit & vegetable

42. Life is possible on the earth because of –

a. Dust and Smoke c. Air and water

b. Cloud and smoke d. hills and forests

43. There are ___________ planets in the solar system.

a. Ten b. Nine c. Eight d. Seven

44. The middle layer if earth called ___________ it contains molten rock “magma”.

a. Crust b. Mantle c. Core d. Rock

45. The earth takes ___________ days to complete one revolution around the sun.

a. Approx. 365 days c. Approx. 500 days

b. Approx. 200 days d. Approx. 1000 days

46. ___________ has gaseous rings around it.

a. Mercury b. Saturn c. Venus d. Earth

47. A cream or lotion that help in reducing infection is called ___________.

a. Fairness cream c. Hair remover cream

b. Stain remover cram d. Anti Septic cream

48. Always swim in the presence of ___________.

a. Animals b. Children c. Adult d. None

49. Clothing is our ___________.

a. Fancy need b. Basic need c. Party need d. None of these

50. An ___________ wears a space suit that provide oxygen.

a. Doctor b. Lawyer c. Teacher d. Astronaut​

Answers

Answered by ash9563
0

Answer:

40. a) reduce, reuse, recycle

41.) a) polystyrene & plastic

42. c) air & water

43, d) seven

44, b) Mantle

45, a) Approx. 365 days

46, b) Saturn

47, d) Anti-Septic cream

48, c) Adult

49, b) Basic need

50, d) Astronaut.

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