Hindustan Mentors Eduserv Scholarship Exam Class 7th Sample Questions 2021
1. During the day time, mid day is hotter than early morning or late evening. It is (A)due to the sun’s rays that fall normally on the surface of earth during mid day. (B)due to the sun’s rays that fall obliquely during the early morning (or) late evening. (C)not concerned with how the light rays fall. (D)Both (A) and (B)
2.Choose the correct statements.(a)Boiling of a given substance takes place at all temperatures.(b)Evaporation of a substance takes place at a constant temperature.(c)Boiling takes place at every part of the liquid.(d)Evaporation takes place only on the surface of liquid. (A)Both (a) and (c) (B)(b), (c) and (d) (C)Both (c) and (d) (D)All the above
3. Fog is formed on the bathroom mirror when one takes a hot shower but does not during a coldshower, because (A)evaporation of water is more at higher temperature. (B)formation of fog on the mirror does not depend on amount of vapour. (C)formation of fog on mirror is not concerned with temperature of water. (D)Both (A) and (B)
4. Choose the correct statement. (A)Every oscillatory motion is periodic in nature. (B)Every periodic motion is oscillatory in nature. (C)The motion of a pendulum bob is periodic in nature (within its small amplitude). (D)Both (A) and (C)
5. Choose the correct statement. (a)Solids undergo linear, areal and cubical expansions.(b)Liquids and gases undergo cubical expansion. (A)Only (a) (B)Only (b) (C)Both (a) and (b) (D)None of these
6. Choose the correct statement : (A) The magnitudes of speed and velocity are same when a body travels in a straight line path. (B) Average speed of a moving body can be equal to zero, but its average velocity cannot be equal to zero. (C) To describe the velocity, direction is necessary. (D) Both (A) and (C)
7. The distance-time graph of an object is a straight line parallel to the time axis, then the object is __________ (A) at rest (B) in uniform motion (C) moving with a uniform speed (D) moving with a non-uniform speed
8. When two bodies are in thermal contact, the direction of flow of heat is determined by its (A) density (B) temperature (C) heat capacity (D) mass
9. The constant temperature at which a solid substance changes into liquid state is called (A) melting point of the substance. (B) boiling point of the substance. (C) saturation temperature. (D) evaporation temperature.
10. Which materials were used for clothes in ancient times ? (A) Animal skins (B) Grass (C) Vines (D) All of these
11. Which among these member countries produce high quality wool ? (A) International wool supply (B) International wool secretariat (C) Indian wool status (D) None of these
