Chemistry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 40 - 44 of 142

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Question number: 40

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

When a nuclear change occurs, what happens to the energy?

Choices

Choice (4) Response

a.

It is destroyed

b.

It is released

c.

It remains unchanged

d.

All of the above

Question number: 41

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

Consider the following statements

I. Group 3 elements are called pnictogens.

II. Group 16 elements are called halogens.

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

Choices

Choice (4) Response

a.

I and II

b.

Only II

c.

Only I

d.

None of the above

Question number: 42

» Chemistry » Structure of Atom

Match List-Ⅰ List-Ⅱ▾

Question

Match the following:
List-Ⅰ List-Ⅱ

(A)

Mild steel

(i)

Non-ferrous

(B)

Mica

(ii)

Ferrous

(C)

Nickel

(iii)

Non-metallic

(D)

Natural gas

(iv)

Energy resource

Choices

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

a.

  • (ii)
  • (iii)
  • (i)
  • (iv)

b.

  • (i)
  • (iii)
  • (iv)
  • (ii)

c.

  • (iv)
  • (i)
  • (ii)
  • (iii)

d.

  • (ii)
  • (iv)
  • (i)
  • (iii)

Question number: 43

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

An electron dot structure for an element shows that element’s symbol and an arrangement of dots that indicates the

Choices

Choice (4) Response

a.

total number of electrons

b.

atomic number

c.

atomic mass

d.

number of electrons in the outer energy level

Question number: 44

» Chemistry » Structure of Atom

MCQ▾

Question

The chemical name of Cd (MnO 4) 2 and Fe 3 (PO 4) 2 are

Choices

Choice (4) Response

a.

cadmium manganite: Iron (II) phosphite

b.

cadmium permanganate: Iron (III) phosphide

c.

cadmium permanganate: Iron (II) phosphate

d.

cadmium manganate: Iron (III) phosphate

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