1. Which gas is most responsible for global warming?
A. Oxygen
B. Nitrogen
C. Carbon Dioxide
D. Hydrogen
Answer: C. Carbon Dioxide
2. Which of the following is a renewable source of energy?
A. Coal
B. Petroleum
C. Solar Energy
D. Natural Gas
Answer: C. Solar Energy
3. Which is the largest organ of the human body?
A. Liver
B. Heart
C. Skin
D. Brain
Answer: C. Skin
4. Which vitamin is obtained from sunlight?
A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer: D. Vitamin D
5. Which disease is caused by the bite of a female Anopheles mosquito?
A. Dengue
B. Malaria
C. Chikungunya
D. Typhoid
Answer: B. Malaria
6. Which gas is essential for respiration?
A. Carbon Dioxide
B. Oxygen
C. Nitrogen
D. Hydrogen
Answer: B. Oxygen
7. Which part of the plant absorbs water from the soil?
A. Stem
B. Leaf
C. Root
D. Flower
Answer: C. Root
8. Which process do green plants use to prepare their food?
A. Respiration
B. Digestion
C. Photosynthesis
D. Germination
Answer: C. Photosynthesis
9. Which layer of the Earth contains the ozone layer?
A. Troposphere
B. Stratosphere
C. Mesosphere
D. Thermosphere
Answer: B. Stratosphere
10. Which of the following is a biodegradable waste?
A. Plastic bottle
B. Glass bottle
C. Vegetable peels
D. Aluminum can
Answer: C. Vegetable peels
11. Which vitamin deficiency causes night blindness?
A. Vitamin A
B. Vitamin B12
C. Vitamin C
D. Vitamin K
Answer: A. Vitamin A
12. Which blood group is called the universal donor?
A. AB+
B. A+
C. O−
D. B+
Answer: C. O−
13. Which disease is caused due to deficiency of iodine?
A. Rickets
B. Goitre
C. Scurvy
D. Beriberi
Answer: B. Goitre
14. Which of the following is a water-borne disease?
A. Tuberculosis
B. Cholera
C. Asthma
D. Malaria
Answer: B. Cholera
15. Which is the hardest natural substance?
A. Gold
B. Iron
C. Diamond
D. Copper
Answer: C. Diamond
16. Which gas do plants absorb during photosynthesis?
A. Oxygen
B. Nitrogen
C. Carbon Dioxide
D. Hydrogen
Answer: C. Carbon Dioxide
17. Which of the following animals is an amphibian?
A. Crocodile
B. Frog
C. Snake
D. Lizard
Answer: B. Frog
18. Which vitamin helps in blood clotting?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin K
Answer: D. Vitamin K
19. Which of the following is an example of air pollution?
A. Plastic waste
B. Loudspeaker noise
C. Vehicle smoke
D. Sewage water
Answer: C. Vehicle smoke
20. What is the main source of drinking water on Earth?
A. Oceans
B. Rivers and Groundwater
C. Atmosphere
D. Glaciers only
Answer: B. Rivers and Groundwater
21. Which organ pumps blood throughout the body?
A. Brain
B. Kidney
C. Heart
D. Liver
Answer: C. Heart
22. Which animal is known as the “Ship of the Desert”?
A. Horse
B. Camel
C. Elephant
D. Donkey
Answer: B. Camel
23. Which festival is associated with the harvesting of crops in Punjab?
A. Onam
B. Pongal
C. Baisakhi
D. Bihu
Answer: C. Baisakhi
24. Which of the following is a communicable disease?
A. Diabetes
B. Hypertension
C. Tuberculosis
D. Cancer
Answer: C. Tuberculosis
25. Which natural resource is used to generate hydroelectric power?
A. Coal
B. Wind
C. Water
D. Petroleum
Answer: C. Water
26. Which method is best for reducing household waste?
A. Burning
B. Recycling
C. Dumping
D. Burying
Answer: B. Recycling
27. Which of the following is a domestic animal?
A. Lion
B. Tiger
C. Cow
D. Leopard
Answer: C. Cow
28. Which of the following helps in soil conservation?
A. Deforestation
B. Overgrazing
C. Afforestation
D. Mining
Answer: C. Afforestation
29. Which part of the body filters waste from the blood?
A. Heart
B. Liver
C. Kidney
D. Lungs
Answer: C. Kidney
30. What is the full form of LPG?
A. Liquid Petroleum Gas
B. Liquefied Petroleum Gas
C. Liquid Propane Gas
D. Liquefied Power Gas
Answer: B. Liquefied Petroleum Gas