Question 1 of 10

Auto reduction is employed in the metallurgy of :

Question 2 of 10

a, b, c (all positive) are the pth, qth, and rth terms of a geometric progression then

Question 3 of 10

∫e^{3 log x} (x⁴+1)^-1 dx is equal to

Question 4 of 10

Which of the following will not produce ethane?

Question 5 of 10

then x is

Question 6 of 10

Two thin metallic strips carrying current in the direction shown, cross each other perpendicularly without touching but being close to each other, as shown. The regions which contain some points of zero magnetic induction are:

Question 7 of 10

No of {tex}H_2O{/tex} molecules in a drop of water weighing 0.05g is:

Question 8 of 10

The rate of a First order reaction 0.04 {tex}mol^{-1} S^{-1}{/tex} at 10 seconds 0.03 {tex}mol^{-1} s^{-1}{/tex} at 20 seconds after intiation of reaction. The half life period of the reaction is

Question 9 of 10

On a humid day in summer, the mole fraction of gaseous H₂O (water vapour ) in the air at 25° C can be as high as 0.0287. Assuming the total pressure of 0.977 atm, what is the partial pressure of dry air ?

Question 10 of 10

A

B

C

D

E2 log (x²+1)(x²+3)+c