Question 1 of 10

Auto reduction is employed in the metallurgy of :

Question 2 of 10

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

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

Question 4 of 10

Question 5 of 10

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

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° (B_h = 4×10^-5T)

Question 7 of 10

A

B

C

Dall of the above

Enone of these

Question 8 of 10

Which of the following is diamagnetic?

Question 9 of 10

then x is

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