IIT-JEE, AIEEE, AIPMT CHEMISTRY - Basic Concepts of Chemistry - Test 2


18.0
27.9
1.0
10.0

40 ml
20 ml
10 ml
4 ml

272 g
403 g
528 g
1056 g
Haemoglobin contains 0.33% of iron by weight. The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (At. wt. of Fe = 56) present in one molecule of haemoglobin is
6
1
4
2
An organic compound contains 49.3% carbon, 6.84% hydrogen and its vapour density is 73. Molecular formula of compound is

None of these

The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is

22.4 L
2.24 L
0.224 L
0.1 L
Which of the following has smallest number of molecules

100
150
120
200

40.3
36.3
24.3
11.3
Two samples of lead oxide were separately reduced to metallic lead by heating in a current of hydrogen. The weight of lead from one oxide was half the weight of lead obtained from the other oxide. The data illustrates
Law of reciprocal proportions
Law of constant proportions
Law of multiple proportions
Law of equivalent proportions
Significant figures in 0.00051 are
5
3
2
4
Given the numbers: 161cm, 0.161cm, 0.0161 cm. The number of significant figures for the three numbers are
3, 4 and 5 respectively
3, 3 and 3 respectively
3, 3 and 4 respectively
3, 4 and 4 respectively
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IIT-JEE, AIEEE, AIPMT CHEMISTRY - Basic Concepts of Chemistry - Test 2

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IIT JEE  AIEEE  AIPMT  AFMC  CBSE

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