The dominant mechanismfor motion of charge carries in forward and reverse biased silicon p-n jucntion are 

(a) diffusion in forward biased, drift in reverse bias 

(b) drift in forward biased, drift in reverse biased 

(c) diffusion in both forward and reverse bias 

(d) drift in both forward and reverse bias

For the circuit shown here, the current flowing through the 1 Ω resistor is :– (Assume that the two doides D₁, and D₂ are ideal diodes)

(a) 2A 

(b) 3A 

(c) 4A 

(d) zero

Match the following columns

Blocks A and B of masses 2 kg and 1 kg respectively are pushed up a frictionless slope by a 21 N force applied parallel to the slope as shown in the figure. Find the magnitude of the force of normal reaction between A and B. [ g = 10 m/s²]

(A) 7 N

(B) 5 N

(C) 9 N

(D) 3 N

The equation of respiration is :–

(a) C₆H₁₂O₆ + 6O₂ → 6CO₂+6H₂O+686 Kcal

(b) C₆H₁₂O₆+2CO₂→ 6CO₂+6H₂O+686Kcal

(c) C₆H₁₂O₆+6CO₂ →6CO₂+6H₂O+680Kcal

(d) C₆H₁₂O₆+6CO₂→12CO₂+6H₂O+686Kcal

Which among the following helps in attachment with other cells?

(a) Pili

(b) Flagella

(c) Fimbriae

(d) Cell wall

The figure given below shows stalked particles on a region of mitochondrial cristae membrane.

Identify the process which occurs in the numbered regions.

Match the corresponding entries of Column I with Column II and choose the correct option from the codes given below

Codes