Study the given adaptation of animal X.
(i) It lives in freezing conditions of Antarctic region.
(ii) It has a thick layer of blubber under the skin.
(iii) It can swim under water.
(iv) It possess feathers.
Which of the following could be animal X?
Study the given statements regarding X.
(i) It forms a protective cage around the lungs, heart and kidneys.
(ii) It is attached to the thoracic part of the backbone.
(ii) It has thin, flat and curved bones.
X could be
the answer should be B.
Seema has been asked by her teacher to tell one main characteristic of each of the three planets Venus, Jupiter and Saturn, so that these can be distinguished from other planets. Which one of the following option is correct?
AVenus : next to Earth, Jupiter : smallest planet, Saturn : farthest from the Earth
BVenus : smallest planet, Jupiter : brightest planet, Saturn : having rings
CVenus : brightest planet, Jupiter : biggest planet, Saturn : having rings
DVenus : biggest planet, Jupiter : having rings, Saturn : next to Earth
Vijay performed an experiment to compare the heat conductivity of four different materials P, Q, R and S. Thumbtacks were fixed with wax on each material and then the materials were fixed to a trough containing hot water as shown in the diagram.
Vijay tabulated his results as shown here.
What can be inferred from his experiment?
A Material R is a better conductor of heat than material S.
B Material S is a better conductor of heat than material R.
C Material Q is a better conductor of heat than material P.
D Materials P, Q, R and S are equally good conductors of heat.
ans is a
Which of the following would you use to join X and Y in the circuit below so that the bulb lights up?
A An aluminium rod
B A plastic spoon
C A woollen string
D An eraser
answer is a because an aluminium rod conducts electricity well