Q1. A jet engine works on the principle of conservation of –
(a) energy
(b) angular momentum
(c) linear momentum
(d) mass
Q2. The pseudopodia of amoeba are used for-
(a)Movement & capture of food
(b)Sensing the food only
(c)Capturing the food only
(d)Movement only
Q3. Cathode rays are-
(a) electromagnetic wave
(b) stream of α-particle
(c) stream of electrons
(d) radiations
Q4. Cathode rays have-
(a) mass only
(b) charge only
(c) no mass and no charge
(d) mass and charge both
Q5.While making syllabus of science at primary level, one should keep in mind that there are pupil who don’t know about science. So for creating interest about science, the content should be-
(a) Theory based
(b) Real Life based Problems
(c) Logical order
(d) All of these
Q6. Science subject has not only content but something else, what is something else-
(a) Clarification
(b) Environmental changes
(c) Accuracy
(d) Practical
Q7.While working on a science project, a science teacher plays a role of-
(a) Guide
(b) Friend
(c) Problem solving person
(d) All of these
Q8. Faraday constant
(a) depends on the amount of the electrolyte
(b) depends on the amount of charge passed through the electrolyte
(c) is a universal constant
(d) None of these
Q9. The conduction of electricity through the electrolyte solution is due to-
(a) Movement of molecules of electrolyte
(b) Movement of ions of electrolyte
(c) Movement of separate atom
(d) Movement of particles of the solvent
Q10. Food cans are coated with tin and not with zinc because
(a) zinc is costlier than tin
(b) zinc has a higher melting point than tin
(c) zinc is more reactive than tin
(d) zinc is less reactive than tin
Solutions:
S1. Ans.(c)
S2. Ans.(a)
S3. Ans.(c)
S4. Ans.(d)
S5.Ans.(b)
S6.Ans.(d)
S7.Ans.(d)
S8. Ans.(b)
S9. Ans.(b)
S10. Ans.(c)
