Olympiad Test: High Order Thinking Skills (HOTs)- 4 - Class 8 MCQ

(i), (ii) and (v) are thermoplastics while (iii) is a thermosetting plastic.

(iv) and (v) are blended fibres.

(i) and (iii) are linear polymers while (ii) is a cross-linked polymer.

(v) is used as a substitute for glass for making windows in aeroplanes.

Milk, Lemon juice, Tap water

Vinegar, Tap water, Lemon juice

Honey, Kerosene, Vegetable oil

None of these

P represents the human male gamete which consists of head, middle-piece and tail.

Q represents the human female gamete which is a single cell.

The process shown in the figure is fertilisation.

The resulting structure formed after the shown process is fetus.

I and II only

III and IV only

II and IV only

I, II, III and IV

Iron, magnesium and gold only

Carbon, magnesium and gold only

Aluminium and gold only

Carbon and magnesium only

P could be the organ that kills many bacteria that enter along with the food due to its acidic pH.

Digestion of food begins in Q and gets completed in T.

Juice secreted by R plays an important role in the digestion of fats.

Digestion of food is completed in S.

This tool is used to separate the grain from the chaff.

This tool is used for sowing seeds at equal distances and proper depth.

This tool ensures that seeds get covered by the soil after sowing.

This tool has a funnel shaped

3 m/s

6 m/s

9 m/s

12 m/s