Chemistry-Structure of Atom [NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension]: Questions 23 - 29 of 34

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Question 23

Question MCQ▾

Neutron was discovered by

Choices

Choice (4)Response

a.

James Chadwick

b.

Rutherford

c.

Goldstein

d.

J. J. Thomson

Edit

Question 24

Question Match List-Ⅰ List-Ⅱ▾

Match the following Compound Formula

List-ⅠList-Ⅱ
(A)

Rock salt

(i)

Na2CO3

(B)

Washing soda

(ii)

(C)

Alum

(iii)

Codes

(D)

Baking soda

(iv)

Choices

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

a.

  • (iii)
  • (iv)
  • (i)
  • (ii)

b.

  • (iii)
  • (i)
  • (ii)
  • (iv)

c.

  • (iv)
  • (ii)
  • (i)
  • (iii)

d.

  • (ii)
  • (iv)
  • (i)
  • (iii)

Edit

Question 25

Question MCQ▾

A well- known antiseptic ‘tincture of iodine’ is a solution made by dissolving

Choices

Choice (4)Response

a.

Iodine in Kl

b.

Iodine in alcohol

c.

Iodine in acetone

d.

Iodine in water

Edit

Question 26

Question MCQ▾

________ is the solution of solid in a solid.

Choices

Choice (4)Response

a.

Beryllium

b.

Brass

c.

Bread

d.

Boron

Edit

Question 27

Question MCQ▾

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.

Propanol

b.

Ethanol

c.

Methanol

d.

Butanol

Edit

Question 28

Question MCQ▾

Dry ice used to preserve food using non-cyclic refrigeration is the solid form of

Choices

Choice (4)Response

a.

NO2

b.

CO

c.

N2

d.

CO2

Edit

Question 29

Question MCQ▾

Consider the following statements

I. Positively charged ions are known as cations.

II. Negatively charged ions are known as anions.

Which of the about statement) is/are correct?

Choices

Choice (4)Response

a.

I and II

b.

Only II

c.

Only I

d.

Neither I nor II

Edit