User Forum

Riddhi ran to open the door when her father rang the bell. She used her sense of ________.

A Hearing
B Seeing
C Touching
D Tasting

A shadow is formed when light shines on an opaque object. Which of the following is responsible for the changes in the shape and size of a shadow?
(i) Position of the object.
(ii) Position of the source.
(iii) Distance between the object and the light source.
(iv) Brightness of the light source.

A(i) and (ii)
B(i), (ii) and (iii)
C(iii) and (iv)
DAll of these

Planet 'X' is _______.

A Venus
B Mars
C Mercury
D Jupiter

Prashant observed flowers of two different plants X and Y. Flowers of X are large, coloured, showy and produce nectar while flowers of Y are small, dull without nectar. Pollen grains of X are sticky and bigger while pollen grains of Y are small in size and dry.
Which of the following is correct regarding X and Y?

A X could be pollinated by insect whereas Y could be pollinated by wind.
B X could be pollinated by wind whereas Y could be pollinated by water.
C X could be pollinated by wind whereas Y could be pollinated by insect.
D X could be pollinated by water whereas Y could be pollinated by insect.

Select the correct mirror image of Fig.(X).



A

B

C

D

Find the combination of numbers, so that the given letters are arranged accordingly to form a meaningful word.


A2, 4, 1, 5, 3
B2, 4, 1, 3, 5
C2, 4, 3, 1, 5
D3, 4, 5, 2, 1

Which of the following reactions are possible?
(i) Mg + CuSO₄ → MgSO₄ + Cu
(ii) Ca + MgSO₄ → CaSO₄ + Mg
(iii) Cu + ZnSO₄ → CuSO₄ + Zn
(iv) Fe + MgSO₄ → FeSO₄ + Mg

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

When current is passed through a conductor, the heat produced in it depends upon
I. The material of the conductor
II. The current flowing through the conductor
III. The time for which the current flows.

A I and II only
B I and III only
C II and III only
D All I, II and III

Sunil and Rohit start at one end of a street, the origin and run to the other end, then head back. On the way back, Sunil is ahead of Rohit. Which statement is correct about the distances run and the displacements from the origin before reaching the origin?

A Sunil has run a greater distance and his displacement is greater than Rohit’s.
B Rohit has run a greater distance and his displacement is greater than Sunil’s.
C Sunil has run a greater distance but his displacement is lesser than Rohit’s.
D Rohit has run a greater distance but his displacement is lesser than Sunil’s.