Chemistry [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 86 - 95 of 208

Choose Programs:

🎯 1998 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 550.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

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

Question 86

Question MCQ▾

How many molecules of water and oxygen atoms are present in 9g of water?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 87

Question MCQ▾

How many number of moles does liters of contain under normal conditions?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 88

Question MCQ▾

The total number of moles of nitrogen in 7 g of nitrogen is ________.

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 89

Question MCQ▾

Which one is radioactive isotope of hydrogen?

Choices

Choice (4)Response

a.

Tritium

b.

Deuterium

c.

Protium

d.

Question does not provide sufficient data or is vague

Edit

Question 90

Question MCQ▾

How many number of electrons are present in ?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 91

Question MCQ▾

How many moles of oxygen atoms are present in two moles of acetic acid?

Choices

Choice (4)Response

a.

3

b.

1

c.

2

d.

4

Edit

Question 92

Question MCQ▾

What is the mass of one atom of silver?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 93

Question MCQ▾

How much volume does moles of contain?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 94

Question MCQ▾

A sample of an oxide of nitrogen is found to contain nitrogen. What is its empirical formula?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 95

Question MCQ▾

Calculate the weight of moles of .

Choices

Choice (4)Response

a.

b.

c.

d.

Edit