NDA CHEMISTRY QUIZ

Question 1:

Question consist of two statements – Assertion (A) and Reason (R). Answer the question selecting the appropriate option given below:
Assertion (A) - The atomic mass of an element expressed in grams is called gram atomic mass.

Reason (R) – Atomic mass of sodium is 36 g/mol .

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

Question 2:

Match List I and List II

List I	List II
A.Mass of 2 moles of calcium atoms	I.37g
B.Mass of 1 mole of water	II.40g
C.Equivalent mass of caustic soda	III.80g
D.Equivalent mass of Calcium hydroxide	IV.18g

A – III , B – II , C- IV , D-I

A – III , B – IV , C- I , D-II

A – III , B – IV , C- II , D-I

A – II , B – IV , C- III , D-I

Question 3:

One mole of carbon dioxide gas at STP is equal to____ .

6. 022 x 10²³ molecules of carbon dioxide
6.022 x 10²³ atoms of carbon dioxide
44 g of carbon dioxide gas
32 g of carbon dioxide gas

Both 1 and 4

Both 2 and 3

Both 1 and 3

Both 1 and 2

Question 4:

The question consists of two statements – Assertion (A) and Reason (R). Answer the question selecting the appropriate option given below:

Assertion(A) – One atomic mass unit is defined as a mass exactly equal to one-twelfth of the mass of one carbon - 12 atom.

Reason (R) - In this system, ¹²C is assigned a mass of exactly 12 atomic mass unit (amu) and masses of all other atoms are given relative to this standard.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

Question 5:

Match list 1 and list 2

List 1	List 2
A.Atomic mass of Sodium	I.63g
B.Equivalent mass of Sulphuric acid	II.98g
C.Equivalent mass of Nitric acid	III.23 g
D.Atomic mass of Sulphuric acid	IV.49 g

A-II , B-IV, C-I , D-III

A-III , B-II, C-I , D-IV

A-III , B-IV, C-II , D-I

A-III , B-IV, C-I , D-II

Question 6:

Mass of one atom of N-14 in grams

1.32 X 10^-23 g

2.32 X 10^-23 g

4.32 X 10^-23 g

3.32 X 10^-23 g

Question 7:

16 g of oxygen gas has same number of moles as

32 g of nitric acid

12 g of caustic soda

16 of Sulphuric acid

14 g of nitrogen gas

Question 8:

Calculate the average atomic mass of hydrogen using the following data:

isotopes	% Natural abundance	Atomic Mass
¹H	99.985	1
²H	0.015	2

1.0001 u

1.1210 u

1.5234 u

1.0989 u

Question 9:

Which of the following has greater number of atoms ?

1 mole of oxygen atoms

2 moles of nitrogen atoms

36 g of carbon atoms

1 g of sulphur atoms

Question 10:

Which of the following pair has same number of moles ?

32 g of sulphur
16 g of oxygen atoms
84 g of nitrogen gas
36 g of water

Both 1 and 2

Both 2 and 3

Both 3 and 4

Both 1 and 4

सूची I	सूची II
A.2 मोल कैल्शियम परमाणुओं का द्रव्यमान	I.37g
B.1 मोल पानी का द्रव्यमान	II.40g
C.कास्टिक सोडा का समतुल्य द्रव्यमान	III.80g
D.कैल्शियम हाइड्रॉक्साइड का समतुल्य द्रव्यमान	IV.18g

सूची 1	सूची 2
A.सोडियम का परमाणु द्रव्यमान	I.63g
B.सल्फ्यूरिक एसिड का समतुल्य द्रव्यमान	II.98g
C.नाइट्रिक एसिड का समतुल्य द्रव्यमान	III.23 ग्राम
D.सल्फ्यूरिक एसिड का परमाणु द्रव्यमान	IV.49 ग्राम

NDA CHEMISTRY QUIZ - 7

Question 1:

Question 2:

Question 3:

Question 4:

Question 5:

Question 6:

Question 7:

Question 8:

Question 9:

Question 10:

Time Left : 00:00:00

आइसोटोप	% प्राकृतिक बहुतायत	परमाणु भार
¹H	99.985	1
²H	0.015	2

NDA CHEMISTRY QUIZ - 7

Question 1:

Question 2:

Question 3:

Question 4:

Question 5:

Question 6:

Question 7:

Question 8:

Question 9:

Question 10:

Time Left : 00:00:00

Welcome

GET THE APP

Verify Your Mobile Number