The object starts from O having a straight line motion along the path OPQRS is represented by the distance-time graph shown in figure. Match the given statements to the different parts of the graph correctly.
(i) Object is moving with maximum speed.
(ii) Object starts moving in reversed direction.
(iii) Object is at rest.
(iv) Average velocity of object is zero.
answer is d
A list of various actions is given below.
(i) Terrace farming
(iii) Making dams
(iv) Setting up new residential areas
(v) Volcanic eruption
(vi) Coal mining
Which of these actions do not lead to global warming?
A(i) and (ii) only
C(ii), (iii), (iv) and (vi) only
D(iii), (iv) and (v) only
why not making dams
In the given options, a boy is looking through a material. Which one of the following represents a translucent material?
D None of these
Study the given diagram classifying three kinds of animals X, Y and Z and select the correct option regarding them.
A Ant, termite and flea are examples of Z.
B Frog, butterfly and mosquito are examples of Y.
C Penguin and ostrich are examples of X.
D Both (A) and (C)
Two identical metal balls A and B moving in opposite directions with different speeds hit each other at point X as shown in the figure. Changes will most likely appear in their
A 1 and 3
B 2 and 3
C 2 and 4
D 1, 2 and 3
Refer to the given figure of a sectional view of a blood vessel having a valve. Select the correct statement regarding it.
A Blood flows from X to Y.
B Muscles in the wall relax and close the valve, preventing backflow.
C The elastic wall causes the valve to close between heart beats.
D The valve is forced open when the blood pressure at Y is greater than at X.
Why b and c are wrong?
Analyse the given table regarding the condition of the fields and other requirements and identify the irrigation systems best suited for the two farmers Ram and Mohan.
ASprinkler system Drip irrigation
BDrip irrigation Sprinkler system
CSurface irrigation Drip irrigation
DDrip irrigation Surface irrigation