Full Marks Science>Chapter 3 - Atoms and Molecules>ADDITIONAL QUESTIONS SOLVED>Q 6

HARD

9th CBSE

IMPORTANT

Earn 100

The formula of ethanol is $C_{2} H_{5} - OH$ . Its molecular mass is

57.14% studentsanswered this correctly

Important Questions on Atoms and Molecules

MEDIUM

9th CBSE

IMPORTANT

Full Marks Science>Chapter 3 - Atoms and Molecules>ADDITIONAL QUESTIONS SOLVED>Q 7

How many moles are present in

28 g

of nitrogen atoms?

HARD

9th CBSE

IMPORTANT

Full Marks Science>Chapter 3 - Atoms and Molecules>ADDITIONAL QUESTIONS SOLVED>Q 8

The molecular mass of

x

is

106

,

x

among the following is

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9th CBSE

IMPORTANT

Full Marks Science>Chapter 3 - Atoms and Molecules>ADDITIONAL QUESTIONS SOLVED>Q 9

Which among the following is not a postulate of Dalton’s atomic theory?

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9th CBSE

IMPORTANT

Full Marks Science>Chapter 3 - Atoms and Molecules>ADDITIONAL QUESTIONS SOLVED>Q 10

Pick up the wrong pairs/combination

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9th CBSE

IMPORTANT

Full Marks Science>Chapter 3 - Atoms and Molecules>TEST YOUR SKILLS>Q 1

the chemical formula of sodium oxide can be-

A. $NaO$

B. ${Na}_{2} O_{3}$

C. ${Na}_{2} O$

"Enter your correct answer as A, B or C."

MEDIUM

9th CBSE

IMPORTANT

Full Marks Science>Chapter 3 - Atoms and Molecules>TEST YOUR SKILLS>Q 2

The formula for Aluminium chloride can be-

A. ${AlCl}_{3}$

B. ${Al}_{2} {Cl}_{3}$

C. $AlCl$

"Enter your correct answer as A, B or C."

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9th CBSE

IMPORTANT

Full Marks Science>Chapter 3 - Atoms and Molecules>TEST YOUR SKILLS>Q 3

What is the atomicity of

K_{2} {Cr}_{2} O_{7}

?

MEDIUM

9th CBSE

IMPORTANT

Full Marks Science>Chapter 3 - Atoms and Molecules>TEST YOUR SKILLS>Q 4

What is the atomicity of

Ca (OH)_{2}

?