Chemistry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 127 - 131 of 142

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Question number: 127

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

In a buck minster fullerene, the number of carbon atoms joined in its spherical molecule, are

Choices

Choice (4) Response
a.

Forty

b.

Seventy

c.

Fifty

d.

Sixty

Question number: 128

» Chemistry » Structure of Atom

MCQ▾

Question

A compound ‘X’ has two carbon atoms having an alcoholic functional group attached to it. It is obtained by the fermentation. It is known as absolute alcohol. Identify ‘X’.

Choices

Choice (4) Response
a.

Butanol

b.

Ethanol

c.

Methanol

d.

Propanol

Question number: 129

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Kanchan takes Cu, Fe, Zn and Al pieces separately in four test tubes labelled as I, II, III and IV respectively. She adds 10 mL of freshly prepared FeSO4 solution to each test tube and observes the color of the metal residue in each case.

Test tubes with different mixtures in it.

Test Tubes With Different Mixtures in It.

Find the color of metals which are in test tubes

She would observe a black residue in the test tubes.

Choices

Choice (4) Response
a.

I and III

b.

III and IV

c.

II and IV

d.

I and II

Question number: 130

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

Consider the following statements

I. A freshly prepared mixture of 1: 3 ratio of cone HNO3: cone HCl.

II. Highly corrosive, fuming liquid.

III. It can dissolve all metal even Au and Pt.

The incorrect statements are

Choices

Choice (4) Response
a.

II and III

b.

I and II

c.

I, II and III

d. None of the above

Question number: 131

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Consider the following statements

I. The only two non-silvery metals are Cu and Au.

II. Hot peppers get their heat from capsaicin.

III. Bee stings are alkaline while wasp stings are acidic.

Which of the above statements is/are correct?

Choices

Choice (4) Response
a.

Only III

b.

I and II

c.

Only I

d.

I and III

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