MCQs based NCERT Class 7 Science Chapters
Q1: The vessels which carry carbon dioxide rich blood from all parts of the body back to the heart are called
Q2: There are some chemicals secreted by an insect to attract attention of other members of species. These are called
Q3: Which gas is produced when sludge is digested?
Q4: What do we call the network of several food chains connecting each other?
(a) Food Web
(b) Food Chain
(c) Food Cycle
(d) Trophic Level
Q5: Nagma was playing basketball with her team mates. Just after the game her pulse rate will
(c) remains same
(d) none of these
Q6: While manufacturing heaters, electric irons etc. nichrome is used as element (or filament) because it offers
(a) high resistance
(b) low resistance
(c) no resistance
(d) High voltage
Q7: Neutralization of calcium hydroixide with hydrochloric acid is an example of
(a) physical change
(b) chemical change
(c) both physical and chemical change
(d) no change
Q8: Sakshi visited her friend who was on dialysis in the hospital. Which organ of Sakshi's friend was not working well?
Q9: Anil used a fuse as a safety device in the electrical circuit to prevent from short circuit. It melts at about 200° C. Which alloy is used to make it?
(a) Zinc and Tin
(b) Lead and Tin
(c) Lead and Copper
(d) Zinc and Copper
Q10: Generally cars have two side view mirrors. Which of the following is used as a side view mirror?
(a) convex mirror
(b) concave mirror
(c) plane mirror
(d) plane glass
Q11: Rahul wants to measure atmospheric pressure. Which instrument will he use?
Q12: The image of an object formed using the convex side of a steel spoon is ___________
(a) erect and smaller
(b) inverted and larger
(c) inverted and smaller
(d) erect and larger
Q13: On a very hot day, a girl has two choices for her dress, one lemon colour dress and another dark brown colour dress. She wore lemon colour dress to prevent _____ of heat.
Q14: A storm has drk funnel shaped cloud reached the ground from the sky and sucked dust, debris and all other things on its way. Such a storm is called
Q15: To keep a very low temperature, dry ice is used. It is solid _________
(c) carbon dioxide
Q16: Which mark is necessary on electrical appliances?
Q17: Which one of the following always carries oxygenated blood?
(a) Arteries except pulmonary artery
(b) Veins except pulmonary vein
(c) Blood Capillaries
(d) None of these
Q18: Which of the following is NOT responsible for water shortage?
(a) Rapid growth of industries
(b) Increasing population
(c) Heavy Rainfall
(d) Mismanagement of water resources
Q19: Which of the following is NOT prepared from the wood obtained from forests?
Q20: Forests are NOT responsible for
(a) providing medicinal plants
(b) maintaining the flow of water into streams
(c) creating flood conditions
(d) absorbing rainwater and maintaining water table
1: (a) Veins
2: (d) pheromones
3: (a) Methane
4: (a) Food Web
5: (a) increase
6: (a) high resistance
7: (b) chemical change
8: (d) Kidney
9: (a) Zinc and Tin
10: (a) convex mirror
11: (c) Barometer
12: (a) erect and smaller
13: (b) absorption
14: (b) Tornado
15: (c) carbon dioxide
16: (b) ISI
17: (a) Arteries except pulmonary artery
18: (c) Heavy Rainfall
19: (b) Thermocol
20: (c) creating flood conditions