Question

01. Give two examples of each:-
a) Fertilisers (b) Antibioties
02. Give reason:-
a) The use of fertilisers should be reduced.
b) Do not let water collect in broken pots around your house
103. Define :- Animal Husbandary.
104. Write chemical equations of the following:-
a) Reaction of a metal with oxygen
b) Reaction of metal with water
c) Reaction of metal with acid
d) A displacement reaction
e) Corrosion of iron​

Answer 1

Fertilizer- urea, calcium nitrate

The rare and care of animals on large scale to get food or other resources is called animal husbandry.

104 (A) METAL +O2= METALOXIDE

(B) METAL+ H2O = METALHYDROXIDE

(C) METAL + HCL = METAL CHLORIDE + H2

Do you know what a ‘bearhug’ is? It’s a friendly and strong hug — such as bears are thought to give, as they attack you! Again, hyenas are thought to laugh and crocodile to weep as they swallow their victims. Are they similar expressions and popular ideas about wild animals in your own words?

(D) FE + CUSO4 = FESO4 + CU

(2) (a) fertilizer is harmful for our body

(b) because water is not still in pot

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