User Forum

When a little bit of curd is added to milk and it is left undisturbed for sometime, the milk changes into curd. It is an example of

(A) Fast chemical change

(B) Fast physical change

(C) Slow chemical change

Bob is trying to turn rod P into a magnet by the following stroking method. He finds that this method does not work. Which two of the following could be the possible explanations?

(1) He should stroke rod P with the south-pole instead.
(2) The bar magnet is not touching rod P.
(3) The bar magnet strokes rod P in more than one direction.
(4) Rod P is not a magnetic material.
(a) 1 and 2
(b) 2 and 3
(c) 2 and 4
(d) 3 and 4

What is X in the figure and what is its function?

(A) Small intestine - absorbs nutrients from digested food

(B) Stomach - breaks down food using acids and enzymes

(C) Appendix - has no specific function in the body

★ The given figure shows human digestive system with parts labelled as d, e, f, g and h.In which labelled parts the following occur?
(1) Acid and enzymes break the food.
(2) Absorbs only water from the food.


-------(1)----(2)
Ae------d
Be------g
Ce------f
Df------g

(A) Drink water

(B) Eat food

(C) Take air

(D) All of these.

Given below are statements about importance of minerals made by four students :

Which of the students have made incorrect statements?
(a) Ali and Swati
(b) Ali and Lily
(c) Ali, Lily and Swati
(d) Mohan and Swati

Which of the following represents the number line for operation 0 - (-2) - (-3)?

(A)

(B)

(C)