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Seeds which have wings or tufts of hair on them are generally dispersed by ____.

AExplosion
BAir
CWater
DAnimals

Three identical blocks each of mass m, are pushed by a force F on a frictionless table as shown in figure.


A Net force on X is F.
B Force applied by X on Y is F/3.
C Force applied by Y on Z is equal to net force on X.
D Net force on Y is equal to zero.

Find the number of triangles formed in the given figure.


A11
B15
C18
DNone of these

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