Chemistry [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 121 - 129 of 208

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Question 121

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Question

MCQ▾

An unipositive ion of an element has electronic structure then what is the atomic number of ?

Choices

Choice (4)Response

a.

18

b.

17

c.

16

d.

19

Question 122

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Question

MCQ▾

Number of molecules in at STP is known as?

Choices

Choice (4)Response

a.

Loschmidt number

b.

Mole number

c.

Avogadro’s number

d.

Question does not provide sufficient data or is vague

Question 123

Chemistry
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Question

MCQ▾

Convert into Centigrade or Celsius scale?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 124

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Question

MCQ▾

Which of the following is mass of a proton;

Choices

Choice (4)Response

a.

b.

c.

d.

Question 125

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Question

MCQ▾

Sodium oxalate in . Calculate that how many grams of sodium oxalate should be weighed to get of

Choices

Choice (4)Response

a.

b.

c.

d.

Question 126

Edit

Question

MCQ▾

________ is used to separate a mixture of two immiscible liquids?

Choices

Choice (4)Response

a.

Condenser

b.

Distillation flank.

c.

Centrifuge

d.

Separating funnel

Question 127

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Question

MCQ▾

The radius of an atomic nucleus is the order of?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 128

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Question

MCQ▾

Calculate the weight of grams atoms of sulphur?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 129

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Question

MCQ▾

Number of moles present in of glucose

Choices

Choice (4)Response

a.

b.

c.

d.