Q1. Nuclear family refers to-
(a) any family born after 1956
(b) family includes parents and their children
(c) only husband and wife
(d) entire family including children, their parents and grand parents
Q2. Tobacco addiction is due to-
(a) nicotine
(b) cocaine
(c) caffeine
(d) histamine
Q3. Carrier of Dengue disease is-
(a) aedes mosquito
(b) culex mosquito
(c) anopheles mosquito
(d) housefly
Q4. DDT is-
(a) an antibiotic
(b) dichloro difluoro titanium
(c) degradable fertilizer
(d) non-degradable pollutant
Q5. Renewable sources of energy is-
(a) coal
(b) plants
(c) uranium
(d) petrol
Q6. Maximum amount of gas found in air is-
(a) oxygen
(b) nitrogen
(c) carbon-dioxide
(d) hydrogen
Q7. Ozone layer is found in-
(a) stratosphere
(b) thermosphere
(c) troposphere
(d) mesosphere
Q8. Most plants are present in-
(a) Lithosphere
(b) Atmosphere
(c) Photosphere
(d) Hydrosphere
Q9. Which is not a biotic factor?
(a) plants
(b) animals
(c) rocks
(d) micro-organisms
Q10. A fresh egg sinks in pure water whereas it floats in saturated salty water, this is due to-
(a) egg shell is made up of calcium which is lighter than pure water
(b) higher density of the salty water
(c) higher density of the pure water
(d) the fluid matter inside the egg shell
Solutions
S1. Ans.(b)
S2. Ans.(a)
S3. Ans.(a)
S4. Ans.(d)
S5. Ans.(b)
S6. Ans.(b)
S7. Ans.(a)
S8. Ans.(d)
S9. Ans.(c)
S10. Ans.(b)
