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question_answer1)
One fermi is [Haryana CEET 1994; DPMT 2004]
A)
\[{{10}^{-13}}\]cm done
clear
B)
\[{{10}^{-15}}\]cm done
clear
C)
\[{{10}^{-10}}\]cm done
clear
D)
\[{{10}^{-12}}\]cm done
clear
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question_answer2)
A picometre is written as
A)
\[{{10}^{-9}}\]m done
clear
B)
\[{{10}^{-10}}\]m done
clear
C)
\[{{10}^{-11}}\]m done
clear
D)
\[{{10}^{-12}}\]m done
clear
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question_answer3)
One atmosphere is equal to
A)
101.325 K pa done
clear
B)
1013.25 K pa done
clear
C)
\[{{10}^{5}}\]Nm done
clear
D)
None of these done
clear
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question_answer4)
Dimensions of pressure are same as that of [CBSE PMT 1995]
A)
Energy done
clear
B)
Force done
clear
C)
Energy per unit volume done
clear
D)
Force per unit volume done
clear
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question_answer5)
The prefix \[{{10}^{18}}\] is [Kerala MEE 2002]
A)
Giga done
clear
B)
Nano done
clear
C)
Mega done
clear
D)
Exa done
clear
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question_answer6)
Given the numbers : 161cm, 0.161cm, 0.0161 cm. The number of significant figures for the three numbers are [CBSE PMT 1998]
A)
3, 4 and 5 respectively done
clear
B)
3, 3 and 3 respectively done
clear
C)
3, 3 and 4 respectively done
clear
D)
3, 4 and 4 respectively done
clear
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question_answer7)
Significant figures in 0.00051 are
A)
5 done
clear
B)
3 done
clear
C)
2 done
clear
D)
4 done
clear
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question_answer8)
Which of the following halogen can be purified by sublimation [Manipal PMT 2001]
A)
\[{{F}_{2}}\] done
clear
B)
\[C{{l}_{2}}\] done
clear
C)
\[B{{r}_{2}}\] done
clear
D)
\[{{I}_{2}}\] done
clear
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question_answer9)
Difference in density is the basis of [Kerala MEE 2002]
A)
Ultrafiltration done
clear
B)
Molecular sieving done
clear
C)
Gravity Separation done
clear
D)
Molecular attraction done
clear
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question_answer10)
Which of the following elements of matter would best convey that there is life on earth
A)
Oxygen done
clear
B)
Hydrogen done
clear
C)
Carbon done
clear
D)
Iron done
clear
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question_answer11)
The compound which is added to table salt for maintaining proper health is
A)
KCl done
clear
B)
\[KBr\] done
clear
C)
\[NaI\] done
clear
D)
\[MgB{{r}_{2}}\] done
clear
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question_answer12)
Which of the following contains only one element
A)
Marble done
clear
B)
Diamond done
clear
C)
Glass done
clear
D)
Sand done
clear
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question_answer13)
In known elements, the maximum number is of [CPMT 1985]
A)
Metals done
clear
B)
Non-metals done
clear
C)
Metalloids done
clear
D)
None of these done
clear
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question_answer14)
Which one of the following is not an element
A)
Diamond done
clear
B)
Graphite done
clear
C)
Silica done
clear
D)
Ozone done
clear
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question_answer15)
A mixture of \[ZnC{{l}_{2}}\] and \[PbC{{l}_{2}}\] can be separated by [AFMC 1989]
A)
Distillation done
clear
B)
Crystallization done
clear
C)
Sublimation done
clear
D)
Adding aceitic acid done
clear
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question_answer16)
A mixture of methyl alcohol and acetone can be separated by [Manipal PMT 2001]
A)
Distillation done
clear
B)
Fractional distillation done
clear
C)
Steam distillation done
clear
D)
Distillation under reduced pressure done
clear
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question_answer17)
In the final answer of the expression \[\frac{(29.2-20.2)\,(1.79\times {{10}^{5}})}{1.37}\]. The number of significant figures is [CBSE PMT 1994]
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
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question_answer18)
81.4 g sample of ethyl alcohol contains 0.002 g of water. The amount of pure ethyl alcohol to the proper number of significant figures is
A)
81.398 g done
clear
B)
71.40 g done
clear
C)
91.4 g done
clear
D)
81 g done
clear
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question_answer19)
The unit J \[P{{a}^{-1}}\]is equivalent to
A)
\[{{m}^{3}}\] done
clear
B)
\[c{{m}^{3}}\] done
clear
C)
\[d{{m}^{3}}\] done
clear
D)
None of these done
clear
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question_answer20)
From the following masses, the one which is expressed nearest to the milligram is
A)
16 g done
clear
B)
16.4 g done
clear
C)
16.428 g done
clear
D)
16.4284 g done
clear
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question_answer21)
The number of significant figures in \[6.02\times {{10}^{23}}\]is
A)
23 done
clear
B)
3 done
clear
C)
4 done
clear
D)
26 done
clear
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question_answer22)
The prefix zepto stands for [DPMT 2004]
A)
\[{{10}^{9}}\] done
clear
B)
\[{{10}^{-12}}\] done
clear
C)
\[{{10}^{-15}}\] done
clear
D)
\[{{10}^{-21}}\] done
clear
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question_answer23)
The significant figures in 3400 are [BHU 2004]
A)
2 done
clear
B)
5 done
clear
C)
6 done
clear
D)
4 done
clear
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question_answer24)
The number of significant figures in 6.0023 are [Pb.CET 2001]
A)
5 done
clear
B)
4 done
clear
C)
3 done
clear
D)
1 done
clear
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question_answer25)
Given \[P=0.0030m\], \[Q=2.40m\], \[R=3000m\], Significant figures in \[P,\,Q\] and \[R\] are respectively [Pb. CET 2002]
A)
2, 2, 1 done
clear
B)
2, 3, 4 done
clear
C)
4, 2, 1 done
clear
D)
4, 2, 3 done
clear
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question_answer26)
The number of significant figures in 60.0001 is [Pb. CET 2000]
A)
5 done
clear
B)
6 done
clear
C)
3 done
clear
D)
2 done
clear
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question_answer27)
A sample was weighted using two different balances. The result?s were (i) 3.929 g (ii) 4.0 g. How would the weight of the sample be reported
A)
3.929 g done
clear
B)
3 g done
clear
C)
3.9 g done
clear
D)
3.93 g done
clear
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