Which of the following statements is incorrect about the Sun?
AThe Sun is a huge mass of very hot gases.
BThe Sun is the only planet that we can see in the day.
CThe distance of the Sun from the Earth is about 150,000,000 km.
DThe Sun is important to the Earth because it provides light energy to green plants to make food.
B is also correct,right.
The given table lists some plants and their reproductive structures.
What should be at X and Y?
A X - Fern, Y - Spores
B X - Pineapple, Y - Corms
C X - Moss, Y - Bulbs
D X - Moss, Y - Leaves
Question incorrect-no 'x'
Black air from your school bus makes the _____.
(a) Water dirty
(b) Air dirty
(c) Soil dirty
(d) None of these
★ During a tug of war, force Y is applied by the team members to move the rope and force X is applied against the ground to move backward. What are forces X and Y?
Reeta puts two different objects in each of the following containers.
Container (i) : Copper coin and iron nail
Container (ii) : Steel nail and aluminium earring
Container (iii) : Marble and gold coin
Container (iv) : Nickel coin and steel nail
She can use a magnet to separate the objects in containers
A (i) and (ii)
B (i), (ii) and (iii)
C (i), (ii) and (iv)
D (i), (ii), (iii) and (iv).
Read the following passage carefully.
P helps to maintain strong eyesight and healthy skin. Q is required for normal growth of bones and teeth in children. R is essential for proper functioning of muscles and nerves. S is needed for natural clotting of blood.
Identify P, Q, R and S and select the incorrect statement regarding these.
A Q is produced when the skin is exposed to sunlight.
B R is a mineral, deficiency of which causes spasms, poor digestion, anxiety and sleeplessness.
C Cod liver oil is a good source of both P and S.
D S is synthesised in our body by bacteria present in the gut.
Refer the given passage and answer the following questions. The graph in the figure shows the position of a body at different times.
What is the speed of the body as it moves from C to D?
(a) 1 cm/s
(b) 4 cm/s
(c) 8 cm/s
(d) 2 cm/s