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________ is a sense organ that is not needed in the given activity.

A Eye
B Ear
C Nose
D None of these

Ram jogs from one end X to the other end Y of a straight 300 m road in 2 minutes 30 seconds, and then turns around and jogs 100 m back to point Z in another 1 minute.

What is Ram's average speed and average velocity while jogging from X to Y respectively?

A1.0 m s^-1 , 1.0 m s^-1
B3.0 m s^-1, 2.0 m s^-1
C2.0 m s^-1, 2.0 m s^-1
D4.0 m s^-1, 1.0 m s^-1

Match column-I with column-II and select the correct option from the codes given below.


A(A) - (iii), (B) - (i), (C) - (ii), (D) - (iv)
B(A) - (i), (B) - (iii), (C) - (ii), (D) - (iv)
C(A) - (iv), (B) - (i), (C) - (ii), (D) - (iii)
D(A) - (iv), (B) - (ii), (C) - (i), (D) - (iii)

Different types of silk produced in India are_____.

AAngora, Mohair, Mulberry, Tasar
BPashmina, Angora, Mohair, Merino
CMulberry, Tasar, Muga, Eri
DMulberry, Merino, Muga, Angora

Match Column-I with Column-II and select the correct option from the codes given below.


A(A) - (ii), (B) - (i), (C) - (iii), (D) - (iv)
B(A) - (iv), (B) - (i), (C) - (ii), (D) - (iii)
C(A) - (iii), (B) - (ii), (C) - (iv), (D) - (i)
D(A) - (iv), (B) - (ii), (C) - (i), (D) - (iii).

Match column I with column II and select the correct option from the codes given below.


A(A) -(iii); (B) - (v); (C) -(i); (D) - (ii); (E) - (iv)
B(A) -(i); (B) - (v); (C) -(iii); (D) - (ii); (E) - (iv)
C(A) -(i); (B) - (v); (C) -(iii); (D) - (iv); (E) - (ii)
D(A) -(iii); (B) - (v); (C) -(i); (D) - (iv); (E) - (ii)

The diagrams W, X, Y and Z given below represent the foot of four birds a, b, c and d.

Which of the following is correct regarding them?

A Foot W, used for swimming, belongs to bird d.
B Foot X, used for catching prey, belongs to bird c.
C Foot Y, used for tearing food, belongs to bird a.
D Foot Z, used for walking, belongs to bird b.

A particle moves on a circular path of radius R as shown in figure. The distance travelled and displacement of the particle from point A to point C respectively are


A
BπR, 2R
C
DπR, πR

When a copper vessel is exposed to moist air for long, it acquires a dull green coating. The reaction can be represented as

W, X, Y and Z are respectively

AN₂, CO₂, O₂ and CuO
BH₂O, N₂, CO₂ and O₂
CH₂O, CO₂, O₂ and CuCO₃
DH₂O, CO₂, O₂ and CuO.