Chemistry [NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension]: Questions 7 - 12 of 143

Choose Programs:

🎯 1056 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 450.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

Help me Choose & Register (Watch Video) Already Subscribed?

Question 7

Question MCQ▾

Calculate the mass of 1 mole of NaCl. (Given atomic mass of Na-23, Cl- 35.5)

Choices

Choice (4)Response

a.

11.2 gms

b.

56 gms

c.

11.8 gms

d.

58.5 gms

Edit

Question 8

Question MCQ▾

On adding ethanoic acid to NaHC03 , what will happen?

Choices

Choice (4)Response

a.

CO2 gas is evolved

b.

NO2 gas is evolved

c.

SO2 gas is evolved

d.

O2 gas is evolved

Edit

Question 9

Question MCQ▾

Who compared the properties of elements with notations of music and propounded ‘law of octaves’ for the classification of elements?

Choices

Choice (4)Response

a.

Dobereiner

b.

Newland

c.

Mendeleef

d.

Lothal Mayer

Edit

Question 10

Question MCQ▾

An element X forms and oxide X2 O3 . In which group of Mendeleef s periodic table is this element located?

Choices

Choice (4)Response

a.

Group III

b.

Group V

c.

Group VIII

d.

Group II

Edit

Question 11

Question MCQ▾

On adding dilute HCl to granulated zinc placed in a test tube, the observation made is

Choices

Choice (4)Response

a.

the surface of the metal turns shining

b.

a colorless and odourless gas evolves with bubbles.

c.

odour of chlorine is observed.

d.

the reaction mixture turns milky.

Edit

Question 12

Question MCQ▾

The latent heat of vaporization of water is

Choices

Choice (4)Response

a.

22.5 × 105

b.

3.34 × 105

c.

2.2 × 105

d.

None of the above

Edit