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WorksheetsJee Revision
Total questions: 20
Worksheet time: 8mins
Gram Molecular Weight Of O2
16g
16 a.m.u.
32 a.m.u.
32g
The element taken as the reference for measuring atomic mass is
C-13
C-16
C-15
C-12
One a.m.u. =
1.9924*10-23/12
1.66*10-24
1.66*10-24g
1.66*10-27kg
Difference between the molecular mass of CH₄ and NH3
1 a.m.u.
12 a.m.u.
3 a.m.u.
4 a.m.u.
Match the following
a-q, b-p, c-r, d-s
a-s, b-r, c-p, d-q
a-r, b-s, c-p, d-q
a-s, b-r, c-q, d-p
The number of atoms present in one mole of Zn
6.09*1023
12.08*1023
6.024*1023
6.023*1023
1 mole or Cr weighs
50g
53g
52g
51g
Which of the following have same molecular mass ?
H₂SO₄
NH3
H₃PO₄
HNO3
Identify the gas whose 2g molecules weighs 56g
He
SO₂
N2
O2
The average atomic mass depends on the % of abundance of
Isodiaphers
Isotones
Isotopes
All of these
Volume of any gas at STP in liters is
22.4 lit
22440 ml
22400 ml
Both (1) and (3)
Gram Formula Mass of Na₂CO₃ is
106g
107g
105g
All of these
In a chemical equation, the co-officient infront of the chemical formula/ symbol represents
Atomic Mass Number
Atomic Mass
No. of electrons and protons
No. of moles
Weight of 3 moles of CO2 is
132kg
123g
132g
None of these
16g of O2 has the same number of molecules as in
11g of CO2
22g of CO2
7g of CO
14g of CO
The number of atoms present in 7.4 moles of Iron is
44*1023
34*1023
44.4*1023
None of these
Which of the following are STP conditions ?
250C, 1 atm
10C, 1 atm
00C, 1 atm
273 K, 760 mm of Hg pressure
Volume of 28g of N2 at STP
22.4 lit
22.4 ml
22.4g
All of these
The molar volume of any gas at STP is
22.14 lit
22.4 lit
22400 ml
Both 1&3
Gram atomic mass of Carbon is
10g
13g
11g
12g
