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Study the pattern of numbers printed on the following piece of paper. How many numbers will there be in Row 13?


A 19
B 21
C 23
D 25

Refer to the given flow chart and select the incorrect statements regarding P, Q, R, S and T.

(i) Q is cellulosic whereas S is proteinaceous in nature.
(ii) S could be obtained from a viviparous animal whereas T could be obtained from an oviparous animal with four stages in its life cycle.
(iii) P and S are non-biodegradable fibres.
(iv) P and R are petroleum based fibres.
(v) Organisms providing S generally inhabit desert lands whereas those providing Q generally inhabit polar regions.

A(i), (ii) and (iii) only
B(i) and (ii) only
C(i), (iv) and (v) only
D(iii), (iv) and (v) only

Which of the following statements are correct?
(i) Some animals help us in keeping our environment clean. They consume dead animals and dispose them off. They are called scavengers.
(ii) Quinine, a forest product obtained from the bark of Cinchona tree, is widely used to treat typhoid.
(iii) Van Mahotsava is a festival of cutting down trees.
(iv) International Day of forests is celebrated on 21st March every year.

A(i) and (iv) only
B(ii) and (iii) only
C(i) and (ii) only
D(iii) and (iv) only

Which of the following graphs correctly depicts the body temperature of the given animals with respect to ambient temperature over a 24 hours period?

A
B
C
D

Refer to the given figure of brain with its parts labelled as X, Y and Z. Which of the following holds true for X, Y and Z?


AY helps us to balance our body and keep us in an upright posture.
BX helps us in learning our lessons and recalling the learnt concepts.
CZ controls the involuntary actions of our body.
DAll of these

Which of the following sets of flowers contain incomplete flower?

AHibiscus and Petunia
BGulmohar and Mustard
CPea and Mulberry
DDate palm and Mulberry

Read the following statements and select the incorrect ones.
(i) The study of food chains shows the interdependence of various organisms in a particular environment.
(ii) Herbivores have sharp cutting teeth in front and flat, grinding teeth at the back.
(iii) Scavengers mainly consume dead bodies of animals and help to keep the surroundings clean.
(iv) Some examples of scavengers are cows, jackals, leeches and bugs.

A(ii) only
B(iv) only
C(ii), (iii) and (iv) only
D(i) and (ii) only

Which of the following statements is/are false?
(i) Two thin woollen sweaters are warmer than a thick woollen sweater.
(ii) It saves fuel if we cook food in a vessel which is blackened at the bottom and polished from the sides.
(iii) The cable wires between two poles are left loose, because in summers the wires may not break on expanding.

A(i) and (iii) only
B(ii) and (iii) only
C(iii) only
D(i) only

A few changes are classified in the given table :

Changes classified incorrectly are

A II and IV only
B I and III only
C III, IV and V only
D III and V only.