General Studies  Chemistry

21. The acid used in car battery

Hcl H2SO4 HNO3 CH3COOH

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22. The positive terminal of dry cell

Zinc carbon Copper None

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23. The normal temperature of human body

36.9oc 28oc 40oc 37oc

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24. Which is not a method of transfer of heat

Conduction Convection Absorption Heat radiation

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25. Relative mass

1/1780 1/1840 1/1740 1/1400

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26. isotope differ in

Atomic mass No.of neutron both a and b Atomic number

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27. atomicity of ozone

1 2 3 4

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28. Relationship between vapour density and molecular mass

2 x molecular mass=vapour density 2 x vapour density=molecular mass both a and b None

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29. Modern periodic table is based on

Atomic Number Atomic Mass Atomic volume Density

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30. CHALCOGEN means

Salt Producer Ore forming elements Inert gas All

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