Quiz Medium 5

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Quiz Medium 5

1 / 25

The sum of pH and pOH in aqueous solution is equal to

2 / 25

In the reaction HCN + H2O ↔ H3O+ CN- the conjugate acid-base pair is

3 / 25

Boric acid is added to glass, because it

4 / 25

Which element among the following cannot exhibit variable electrovalency ?

5 / 25

The current-voltage characteristics forms the basis of

6 / 25

One arm of each t-RNA terminates in the base sequence

7 / 25

The correct order of ionization energies of alkali metals is

8 / 25

Which of the following is the third most abundant element in the nature?

9 / 25

Different arrangements of groups in space which can be converted into one another by rotation around a single bond are called

10 / 25

If 20 ml of 0.5 N salt solution in diluted to one litre, what is the new concentration?

11 / 25

Which of the following physical property forms the basis of radio chemical methods of analysis?

12 / 25

Compounds HCN and HNC are

13 / 25

Various compounds corresponding to molecular formula C4 H10 are

14 / 25

The most abundant alkali metal is

15 / 25

Which name is associated with the rules which help in predicting the polarisability of anion?

16 / 25

If n and no are the coefficients of viscosity of a solution and the pure solvent, then specific viscosity may be expressed as

17 / 25

. Entropy is a measure of

18 / 25

Which of the following compound is electrovalent in nature?

19 / 25

Which of the following analytical technique is used for the separation of an interfering substance or analyte from the mixture?

20 / 25

The alkali metal that reacts with nitrogen directly to form nitride is

21 / 25

It is possible to distinguish between optical Isomers?

22 / 25

HS- is a conjugate base of

23 / 25

The Hall process involves the reduction of Al203 to aluminum by

24 / 25

Layer of C-atom in graphite are held together by

25 / 25

Which of the following technique is used to separate substances of high molecular weights (proteins, enzymes) of different charges?

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