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Which of the following statements is incorrect?

A Motion of a vehicle on a straight road is not rectilinear motion.
B Motion of honeybees is the example of random motion.
C Cubit is the length of a forearm.
D Centigrade is not the SI unit of temperature.

Study the given food web.

If somehow, the population of organism V is removed from this food web, then population of organism __(i)__ will be affected positively and that of organism ___(ii)___ will be affected negatively.

Study the given Venn diagram and select the incorrect statement regarding it.


AP could be a vitamin that helps keep gums healthy.
BQ could be a vitamin that help to build strong bones and teeth.
CP could be a vitamin that helps in clotting of blood.
DDeficiency of P could cause scurvy and that of Q causes prolonged bleeding.

Which element is eighth to the left of seventeenth element from the left end in the given arrangement?
5 H I 7 $ K J 4 % L A T 3 8 @ F 6 U # V P 1 E * 9 D 2

A4
B%
CL
D6

Select the correct match.

AVitamin-Vitamin E Deficiency disease-Nerve disorder
BVitamin-Vitamin B₂ Deficiency disease-Beri-beri
CVitamin-Vitamin C Deficiency disease-Anaemia
DVitamin-Vitamin D Deficiency disease-Pellagra

Identify the incorrect option.
(i) 4 hours = 14400 seconds
(ii) 1 year = 8750 hours
(iii) 7 quintal = 7000 kilograms
(iv) 1 metric ton = 1000 kilograms

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

Which of these inclined planes would be most efficient to use to move an object upward?

A
B
C
D

Group the given figures into three classes on the basis of their identical properties using each figure only once.


A1, 5, 7; 2, 4, 6; 3, 8, 9
B1, 5, 7; 2, 4, 8; 3, 6, 9
C1, 5, 7; 2, 3, 6; 4, 8, 9
D1, 5, 7; 2, 8, 9; 3, 4, 6

Select the incorrect match.

A Fermentation – Occurs in absence of oxygen and yields very little energy
B Internal respiration – Exchange of gases between blood and body cells
C Exhalation – Decrease in air pressure inside the lungs causes air to move out from the lungs
D Stomata – Present on the surface of leaves and young stems.

Lalita carried out the following experiment. She took a torch and covered the glass of torch with her palm in a dark place. She switched on the torch and observed that the light of torch passes out of her palm but not clearly.
What do you conclude from this experiment?


ALight is translucent
BLight is opaque
CPalm is opaque
DPalm is translucent