Chemistry 11 Chapter 1
Basic concepts
Test 16
1.
Calcium have ______ isotopes?
a) 6
b) 8
c) 2
d) 4
2.
Nickel have ______ isotopes?
a) 5
b) 3
c) 1
d) 7
3.
Tin have _________isotopes?
a) 5
b) 3
c) 9
d) 7
4.
1 mole of Na contains=?
a) None of these
b) 23×6.022×10
23
atoms
c) Both of these
d) 6.022×10
23
atoms
5.
Palladium have ______ isotopes?
a) 4
b) 8
c) 6
d) 2
6.
N
A
is?
a) Avogadro,’s number
b) Atomic number
c) Natural number
d) None of these
7.
Cadmium have ________isotopes?
a) 7
b) 5
c) 9
d) 3
8.
Total number of naturally occurring isotopes are?
a) 280
b) 380
c) 180
d) 480
9.
Oxygen have ______ isotopes?
a) 2
b) 4
c) 1
d) 3
10.
The volume occupied by 1.4g of N
2
at STP is?
a) 22.4dm
3
b) None of these
c) 1.12dm
3
d) 2.224 dm
3
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