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Total number of stereoisomers of the following compounds are respectively : 

(A) 4, 6 

(B) 8, 0 

(C) 6, 6 

(D) 8, 8

For car battery which one is correct statement ? 

(A) Cathode is Lead dioxide (PbO₂) and anode is Lead (Pb) 

(B) Cathode is Lead dioxide (PbO₂) and anode is Copper (Cu) 

(C) Cathode is Copper (Cu) and anode is Lead dioxide (PbO₂) 

(D) Cathode is Copper (Cu) and anode is Lead (Pb)

Which of the following is optically active molecule?

The equation of the normal to the curve y = –√x + 2 at the point of its intersection with the bisector of the first quadrant is : 

(A)   2x – y + 1 = 0

(B)   4x – y + 16 = 0 

(C)  4x – y = 16 

(D)  2x – y – 1 = 0

A 10gm bullet moving directly upward at 1000 m/s strikes and passes through the center of mass of a 10 kg block initially at rest .The bullet emerges from the block moving directly upward at 400 m/s. What will be velocity of the block just after the bullet comes out of it ?

(A) 0.6 m/s 

(B) 1 m/s 

(C) 0.4 m/s 

(D) 1.4 m/s

How many σ bonds and π bonds are present in

(A) 5 σ + 8 π 

(B) 9 σ + 7 π 

(C) 9 σ + 9 π 

(D) 5 σ + 9 π

Some pairs of ions are given below. In which pair, first ion is more stable than second ion ?

Which of the following material is known as lunar caustic ? 

(A) NaNO₃ 

(B) AgCl 

(C) AgNO₃ 

(D) NaOH

Two tunning forks P and Q when set vibration, gives 4 beats s^-1 . If a prong of the fork P is filled, the beats are reduced to 2 beats s^-1 . What is frequency of P, if that of Q is 250 Hz? 

(a) 250 Hz 

(b) 246 Hz 

(c) 252 Hz 

(d) 254 Hz

Ionisation energy in group 1A varies in the decreasing order as 

(a) Li > Na > K > Cs 

(b) Na > Li > K >Cs 

(c) Li > Cs > K > Na 

(d) K > Cs > Na > Li