Chemistry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 56 - 60 of 142

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Question number: 56

» Chemistry » Metals & Non Metals

MCQ▾

Question

All of the following elements are metalloids except

Choices

Choice (4) Response

a.

antimony

b.

gallium

c.

silicon

d.

germanium

Question number: 57

» Chemistry » Structure of Atom

Match List-Ⅰ List-Ⅱ▾

Question

Match the following:
List-Ⅰ List-Ⅱ

(A)

Halo alkanes

(i)

C n H 2 n

(B)

Alkane

(ii)

CnH2n+1X

(C)

Alkene

(iii)

CnH2n+2

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)

a.

  • (ii)
  • (i)
  • (iii)

b.

  • (i)
  • (ii)
  • (iii)

c.

  • (iii)
  • (ii)
  • (i)

d.

  • (ii)
  • (iii)
  • (i)

Question number: 58

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

When hydrogen and oxygen combined chemically in a fixed ratio of 1: 8 by weight, X is obtained. X

Choices

Choice (4) Response

a.

is homogeneous

b.

can be separated into its constituent by physical methods.

c.

has fixed melting point

d.

has properties quite different from hydrogen and oxygen

Question number: 59

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Consider the following statements.

I. Chloralkali process is the process of electrolysis of NaCl solution.

II. During electrolysis, CI gas is produced at anode and H2 gas is produced at cathode.

Which of the above statements (s) is/are correct?

Choices

Choice (4) Response

a.

I and II

b.

Only I

c.

I nor II

d.

Only II

Question number: 60

» Chemistry » Metals & Non Metals

MCQ▾

Question

A transition metal X got its name from a moon of the planet Saturn. It was discovered by William Gregor. It can be extracted from its ore by Kroll process. Can you identify this metal X?

Choices

Choice (4) Response

a.

Francium

b.

Titanium

c.

Uranium

d.

Radium

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