Chemistry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 132 - 137 of 142

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1042 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

Question number: 132

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

The changing of a solid directly into vapour on heating is called

Choices

Choice (4) Response
a.

Chromatography

b.

Crystallisation

c.

Sublimation

d.

Distillation

Question number: 133

» Chemistry » Fibres and Plastics

MCQ▾

Question

Helium balloons float in air why?

Choices

Choice (4) Response
a.

It has same weight as that of air

b.

It is heavier than air

c.

It is lighter than air

d. None of the above

Question number: 134

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

Elements given below forms a group alike except one. Identify the odd one.

Holmium, Copernicium, Kryptonite, Berkelium

Choices

Choice (4) Response
a.

Copernicium

b.

Holmium

c.

Kryptonite

d.

Berkelium

Question number: 135

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

The oxide of which of the following elements is used as a coolant?

Choices

Choice (4) Response
a.

Nitrogen

b.

Silicon

c.

Carbon

d.

Phosphorus

Question number: 136

» Chemistry » Metals & Non Metals

MCQ▾

Question

Consider the following statements

I. It is the cheapest natural element.

II. Its atomic number is 88.

III. Francium and caecium are least electronegative elements.

Which of the about facts regarding francium is/are true?

Choices

Choice (4) Response
a.

I and II

b.

Only I

c.

Only III

d.

I and III

Question number: 137

» Chemistry » Periodic Classification of Elements

Match List-Ⅰ List-Ⅱ▾

Question

Match the following
List-Ⅰ (Reactants) List-Ⅱ (Products)

(A)

CuO+H2

(i)

FeS(s)

(B)

ZnCO3 (s

(ii)

Cu+H2O

(C)

Fe(s)+S(s)

(iii)

ZnO(s)+CO2(g)

(D)

BaCl2(aq)+K2SO4(aq)

(iv)

BaSO4(s)+2KCl(aq)

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)
a.
  • (iv)
  • (i)
  • (ii)
  • (iii)
b.
  • (ii)
  • (iii)
  • (i)
  • (iv)
c.
  • (iv)
  • (ii)
  • (iii)
  • (i)
d.
  • (iii)
  • (iv)
  • (ii)
  • (i)

Sign In