Choose the correct options from following and match your answers from key...
1.Which of the following statements is correct?
The bone in human body is an inert and unchanging substance
Mg plays roles in neuromuscular function and interneuronal transmission
The daily requirement of Mg and Ca in the human body is estimated to be 0.2-0.3 g
All enzymes that utilizes ATP in phosphatetransfer require Ca as the cofactor
2.If the kinetic energy of an electron is increased four times, the wavelength of the de-Broglie wave associated with it would become
Two times
Half
One-fourth
Four-times
3.The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1:4. The ratio of number of their molecule is:
1:8
3:16
1:4
7:32
4.The highest electrical conductivity of the following aqueous solutions is of
1 M acetic acid
1 M chloroacetic acid
1 M fluoroacetic acid
1 M difluoroacetic acid
5.Glass is a
micro-crystalline solid
super-cooled liquid
gel
polymeric mixture
6.Which one of the followingcompounds will not be soluble in sodium bicarbonate?
Benzene sulphonic acid
Benzoic acid
o-Nitrophenol
2,4,6-Trinitrophenol
7.One mole of a symmetrical alkene on ozonolysis gives two moles of analdehyde aving a molecular mass of 44u. The alkene is:-
Ethene
Propene
1-Butene
2-Butene
8.BOD stands for
Biochemical Oxidation Demand
Biological Oxygen Demand
Biochemical Oxygen Demand
Bacterial Oxidation Demand
9.Iodoform can be prepared from all except:-
Isobutyl alcohol
Ethyl methyl ketone
Isopropyl alcohol
3-Methyl-2-butanone
10.According to the Preriodic Law of elements, the varistion in properties of elements is related to their.
nuclear masses
atomic masses
nuclear neutron-proton number ratios
atomic masses
