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Class 11 Chemistry
Some Basic Concepts Of Chapter 1
Quiz 1
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The multiple 10-6 has the prefix:
0%
micro
0%
centi
0%
mega
0%
milli
The scientific notation for 700 is:
0%
7 x 10-2
0%
7 x 102
0%
7 x 10
0%
7 x 103
The prefix used for 10-18 is:
0%
atto
0%
centi
0%
kilo
0%
deci
The coefficient in 6.65 x 104 is:
0%
10-4
0%
6.65
0%
6.65 x 104
0%
104
One atomic mass unit (amu) is closest to the mass of:
0%
The oxygen-16 nucleus
0%
The carbon-12 nucleus
0%
6.022 x 1023 atoms of hydrogen
0%
One proton
The number of base SI units is:
0%
5
0%
7
0%
6
0%
2
The SI unit of time is:
0%
minute
0%
metre
0%
second
0%
kilogram
The 'Candela' is the unit of:
0%
Luminous intensity
0%
Amount of substance
0%
Thermodynamic temperature
0%
Electric current
The number of significant figures in 3256 is:
0%
4
0%
3
0%
5
0%
2
The SI unit of electric current is:
0%
ampere
0%
candela
0%
metre
0%
kilogram
Number of significant figures in 0.001520 is:
0%
4
0%
7
0%
6
0%
3
If the true value for a result is 2.00 g and a student takes 2 measurements and reports the results as 1.95 g and 1.93 g, then we can conclude that:
0%
The values are both precise and accurate
0%
The value are neither precise nor accurate
0%
The values are accurate
0%
The values are precise
The unit of amount of substance is:
0%
ampere
0%
second
0%
mole
0%
kilogram
Out of the numbers: 6.26, 5.8, 0.00267, 0.03, the one with the least significant figures is:
0%
0.03
0%
5.8
0%
0.00267
0%
6.26
If the true value for a result is 3.00 m and a student records two readings as 3.01 m and 2.99 m, then we can conclude that:
0%
the values are neither accurate nor precise
0%
the values are both accurate and precise
0%
the values are precise
0%
the values are accurate
The number of significant figures in 3.1205 are:
0%
3
0%
7
0%
6
0%
5
The scientific notation for 0.00016 is:
0%
1.6 Χ 10-4
0%
16 Χ 10-4
0%
1.6 Χ 10-2
0%
1.6 Χ 104
The number of significant figures in 0.04 are:
0%
4
0%
1
0%
3
0%
2
If we add the numbers 6.68 and 0.8, the result will be:
0%
7.4
0%
7.5
0%
7.58
0%
7.48
The answer for the expression is:
0%
0.469
0%
0.44
0%
0.439
0%
0.4
0 h : 0 m : 1 s
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