Chemistry [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 163 - 170 of 208

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Question 163

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Question

MCQ▾

________Forms colloidal solution in water?

Choices

Choice (4)Response

a.

Starch

b.

Salt

c.

Glucose

d.

Barium nitrate

Question 164

Edit

Question

MCQ▾

Sodium ion is isoelectronic with?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 165

Edit

Question

MCQ▾

Assume that an element has electrons, protons and neutrons, then what is the mass number of the element?

Choices

Choice (4)Response

a.

10

b.

12

c.

22

d.

32

Question 166

Edit

Question

MCQ▾

Which one of the following process is known to be a chemical change?

Choices

Choice (4)Response

a.

Evaporation of water

b.

Boiling of eggs

c.

Precipitation of snow

d.

Melting of wax

Question 167

Edit

Question

MCQ▾

Which of the following are the same for the given set of elements and ?

Choices

Choice (4)Response

a.

Number of protons

b.

Number of electrons

c.

Number of nucleons

d.

Number of neutrons

Question 168

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Question

MCQ▾

Which of the following is isoelectronic with neon?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 169

Chemistry
Edit

Question

MCQ▾

Convert to kelvin, the value is (or) the resulting temperature in kelvin is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 170

Edit

Question

MCQ▾

Find the common thing in both oxygen atom and oxide ion?

Choices

Choice (4)Response

a.

Same size

b.

Same number of electrons

c.

Same number of protons

d.

Same electronic configuration