Question 1 of 10

When 32.25g of ethyl chloride is subjected to dehydrohalogenation reaction the yield of the alkene formed is 50%. The mass of the product formed is: (atomic mass of chlorine is 35.5)

Question 2 of 10

The critical temperature of {tex}O_2, N_2, H_2{/tex} and {tex}CO_2{/tex} are 154.3K, 126K, 33.2K and 304K respectively. The extent of adsorption on tungsten may be highest in case of

Question 3 of 10

The angle of minimum deviation in an equilateral prism of refractive index 1.414 is

Question 4 of 10

Question 5 of 10

If vector a = i + 2j + 3k and b = i × (a×i) + j×(a×j) + k×(a×k) then length of b is equal to

Question 6 of 10

The energy level diagrams for exothermic S_N1 and S_N2 reactions could be respectively (R - Reactants P - products)

Question 7 of 10

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

Question 8 of 10

B.H.C is prepared by treating benezene with

Question 9 of 10

Which of the following has maximum number of lone pairs associated with Xe?

Question 10 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