Chemistry 11 Chapter 1
Basic concepts
Test 17
1.
1 mole of uranium=?
a) 238g
b) 256g
c) 246g
d) 23g
2.
Identification of limiting reactant contains?
a) Find out the number of moles of product with the help of balanced chemical equation
b) Calculate the number of moles from given reactant
c) All of these
d) Identify the reactant which produces the least amount of product as limiting reactant
2.
Identification of limiting reactant contains?
a) Find out the number of moles of product with the help of balanced chemical equation
b) Calculate the number of moles from given reactant
c) All of these
d) Identify the reactant which produces the least amount of product as limiting reactant
4.
Relative abundances of
12
C and
13
C are 98.893 and 1.107 respectively, calculate fractional atomic mass of Carbon?
a) 12
b) 12.05
c) 12.01
d) None of these
5.
2.478 g of oxygen is present in 8.657 g of a compound, what is the percentage of oxygen present in the compound?
a) 25.36
b) 28.62
c) 22.48
d) None of these
6.
Number of unstable radioactive isotopes prodused artificially?
a) 300
b) 100
c) 400
d) 200
7.
STP is the abbreviation of?
a) Standard technical polarization
b) Standard temperature pressure
c) None of these
d) Both of these
8.
Which one is mono-isotopic?
a) Oxygen
b) Hydrogen
c) Gold
d) Sulphur
9.
In 18g of water number of water molecules?
a) 2×6.022×10
23
molecules
b) 6.022×10
23
molecules
c) 3×6.022×10
23
molecules
d) None of these
10.
If mass is given, volume can be calculated?
a) Both of these
b) Mass-volume relationship
c) Volume- mass relationship
d) None of these
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