Question

aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?

1 point

Baking powder

Lime

Ammonium hydroxide solution

Hydrochloric acid

 

This is a required question

12 *

Galvanization is a method of protecting iron from rusting by coating with a thin layer of

1 point

Gallium

Aluminium

Zinc

Silver

13 *

Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?

1 point

Diamond

Graphite

Sulphur

Fullerene

14 *

Which of the following property is generally not shown by metals?

1 point

Electrical conduction

Sonorous in nature

Dullness

Ductility

15 *

The name of the compound CH3 — CH2 — CHO is

1 point

Propanal

Propanone

Ethanol

Ethanal

16 *

The first member of alkyne homologous series is

1 point

ethyne

ethene

propyne

methane

17 *

Offspring formed as a result of sexual reproduction exhibit more variations because

1 point

Sexual reproduction is a lengthy process

Genetic material comes from two parents of the same species

Genetic material comes from two parents of different species

Genetic material comes from many parents

18 *

Which of the following is not a digestive enzyme contained in the pancreatic juice?

1 point



(i) and (ii)

(i) and (iv)

(ii) and (iii)

(i) and (iii)

19 *

The enzymes pepsin and trypsin are secreted respectively by

1 point

Stomach and pancreas

Salivary gland and stomach

Liver and pancreas

Liver and salivary gland

20 *

Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:

1 point

Hydrochloric acid

Fat

Carbon dioxide

Lactic acid

Back




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Answer 1

Answer:

1. ammonium hydroxide solution
2. zinc.
3. graphite
4. dullness
5. propanal.
6. ethyne
7. genetic material comes from two parents of same species
8. k
9. stomach and pancreas
10. lactic acid