Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>TEST YOUR GRIP>Q 11

EASY

11th CBSE

IMPORTANT

Earn 100

One amu (or u) has mass equal to $\times 10^{- 27} kg$ . $(1.66 / 1.756)$

50% studentsanswered this correctly

Important Questions on Some Basic Concepts of Chemistry

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>TEST YOUR GRIP>Q 12

The number of molecules present in

1 kg

mole is _____

\times 10^{26}

.

(6.022 / 6.626)

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>TEST YOUR GRIP>Q 13

The numbers of atoms present in one molecule of a substance is called its _____.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>TEST YOUR GRIP>Q 14

The normality of

500 ml

of

0.2 M

sulphuric acid is _____.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>TEST YOUR GRIP>Q 16

The empirical formula of hydrogen peroxide is _____.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>TEST YOUR GRIP>Q 17

Amount of Oxalic acid

{(COOH)}_{2} . 2 H_{2} O

, in grams required to prepare

200 ml

of

0.5 M

Oxalic acid solution is _____ grams.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>ADDITIONAL QUESTIONS>Q 1

Chemistry can prove to be a blessing or a curse depends upon the uses to which it is put. Comment.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>ADDITIONAL QUESTIONS>Q 2

Give examples of homogeneous mixtures in different physical states (two each).

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>ADDITIONAL QUESTIONS>Q 3

Define Element, Compound and Mixture.