NSTSE (National Science Talent Search Exam- Unified Council) Class 7: Questions 868 - 873 of 1732

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Question number: 868

» Mathematics » Data Handling

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MCQ▾

Question

The mean of 8 observations is 34. If one observation, namely 13 is deleted, the new mean is

Choices

Choice (4) Response

a.

42

b.

35

c.

58

d.

37

Question number: 869

» Physics » Heat

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MCQ▾

Question

The microorganisms of water can be killed by which process so that it is safe for drinking purpose?

Choices

Choice (4) Response

a.

By excessive cooling

b.

By putting medicines

c.

By boiling water

d.

All of the above

Question number: 870

» Mathematics » Data Handling

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MCQ▾

Question

The daily sale of water (in liters) in a shop for six days is as follows:

15,20,22,36,50 and 25

The average daily sale is

Choices

Choice (4) Response

a.

47

b.

22

c.

32

d.

28

Question number: 871

» Physics » Heat

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MCQ▾

Question

Why wooden handles are used in cooking utensils?

Choices

Choice (4) Response

a.

Wooden handles are cheap

b.

Wooden handles does not break easily

c.

Wooden handles look pretty and attractive.

d.

None of the above

Question number: 872

» Mathematics » Data Handling

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MCQ▾

Question

The average weight of sample of 12 apples is 60 g. Later it was found that the weighing machine had shown the weight of each apple 10 g less. The correct average weight of an apple is

Choices

Choice (4) Response

a.

70 g

b.

60 g

c.

55 g

d.

50 g

Question number: 873

» Mathematics » Perimeter and Area

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MCQ▾

Question

The length and breadth of a rectangular hall are 0.8 m and 60 cm respectively. The distance between two opposite corners of the hall is

Choices

Choice (4) Response

a.

14.85 cm

b.

100 m

c.

14.85 m

d.

100 cm

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