3996: Which of the following pairs of substances can be completely separated by sublimation ?

(a) Sand and iodine

(b) Ammonium chloride and iodine

(c) Sand and sulphur

(d) Salt and sulphur
3997: Assertion (A):

Minimum wages in India are fixed in accordance with the levels of living and the labour participation ratios.

Reason (R) :

All workers covered by the Minimum Wages Acts are above the poverty line.

Of these statements

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not the correct explanation of A

(c) A is correct while R is wrong

(d) A is wrong while R is correct
3998: What is the correct sequence of the rivers Godavari, Mahanadi, Narmada and Tapi in the descending order of their lengths?

(a) Godavari--Mahanadi--Narmada--Tapi

(b) Godavari--Narmada--Mahanadi--Tapi

(c) Narmada--Godavari--Tapi--Mahanadi

(d) Narmada--Tapi--Godavari--Mahandai
3999: Consider the following crops :

1. Cotton

2. Groundnut

3. Maize

4. Mustard

Which of the above are Kharif crops?

(a) 1 and 2
(b) 1, 2 and 3
(c) 3 and 4
(d) 1, 2, 3 and 4
4000: Examine the following statements :

I. George attends Music classes on Monday.
II. He attends Mathematics classes on Wednesday.
III. His Literature classes are not on Friday.
IV. He attends History classes on the day following the day of his Mathematics classes.
V. On Tuesday, he attends his Sports classes.

If he attends just one subject in a day and his Sunday is free, then he is also free on

(a) Monday
(b) Thursday
(c) Saturday
(d) Friday