Question 1 of 10

Auto reduction is employed in the metallurgy of :

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B
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E

Question 2 of 10

Which one of the following pairs of substances will not produce hydrogen when reacted together?

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B
C
D
E

Question 3 of 10

The two slits are 1 mm apart from each other and illuminated with a light of wavelength 5 x 10-7 m. If the distance of the screen is 1 m from the slits, then the distance between third dark fringe and fifth bright fringe is

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B
C
D
E

Question 4 of 10

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B
C
D
E

Question 5 of 10

Both ethene and ethyne can be made in one step reactions from

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B
C
D

Question 6 of 10

The radius of the coil which has 10 turns is 0.1m. The current required to produce a deflection of 60° (Bh = 4×10-5T)

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B
C
D
E

Question 7 of 10

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B
C
D
E

Question 8 of 10

Which of the following is diamagnetic?

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C
D

Question 9 of 10


then x is

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B
C
D

Question 10 of 10

The correct order of ionic radii of {tex}Y^{3+}, La^{3+}, Eu^{3+}{/tex} and {tex}Lu^{3+}{/tex}is

A
B
C
D
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