Question

2. State how berseem, oats or sudan grass are used by farmers ?
3. Arrange the following in increasing number of molecules :
(1) 0.5 moles of H, (ii) 4 g of H,
(iii) 18 g of H,0 (iv) 2.2 g of CO,
(a) (i)<(iii)<(iv)<(ii) (6) (iv)<(i)<(iii)<(ii) (c) (i)<(ii)<(11)<(iv) (d) (i)<(iii)<(ii)<(i)
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Answer 1

Answer:

2.Berseem, oats or sudan grass are the fodder crops used specifically to feed domesticated livestock, such as cattle, rabbits, sheep, horses, chickens and pigs.And for this purpose they are used by farmers.

3.(b) iv < i < iii < ii

Explanation:

Answer 2

2. The beerseem ,oats or Sudan grass are used by farmers in different ways ,they were farming those to feed their domestic animals or we can say that These beerseem,oats or Sudan grass are used to feed domestic animals like , some of farmers income is dependent on those cattles also , mainly these crops are use to feed various kind of cattle like goat,sheep,cow, horses,pigs etc.

3. 0.5 moles of H = 0.5× 6.023× 10^23 molecules of H

4 g of H = 4× 6.023× 10^23 molecules of H

18 g of H2O = 6.023× 10^23 molecules of H2O

28 g of CO = 6.023× 10^23 molecules of CO

so 2.2 g of CO = 2.2/28 × 6.023× 10^23 molecules of CO

so the increasing number of molecules would be

2.2g of CO < 0.5 moles of H< 18 g of water<4 g of H

ans would be (b) (iv)<(i)<(iii)<(ii)