(a) Long bone
(b) spleen
(c) Liver
(d) Pancreas
Answer:
Pneumoconiosis affects the workers who work mainly in
(a) Glass industry
(b) Distilleries
(c) Tanneries
(d) Coal mining industry
Answer:
Physico-chemical characteristics of water in water sources undergo change due to
(a) Evapotranspiration
(b) Effluents
(c) Aquatic fungi
(d) Aquatic macrophytes
Answer:
Which one of the following fuels causes minimum environmental pollution?
(a) Kerosene
(b) Hydrogen
(c) Diesel
(d) Coal
Answer:
Which one of the following does a TV remote control unit use to operate a TV set?
(a) Radio waves
(b) Microwaves
(c) Light waves
(d) Sound waves
Answer:
Which one of the following is a vector quantity?
(a) Work
(b) Energy
(c) Momentum
(d) Pressure
Answer:
An air bubble in water will act like a
(a) Concave mirror
(b) Cancave lens
(c) Convex mirror
(d) Convex lens
Answer:
Optical fibre works on the principle of
(a) Interference
(b) Scattering
(c) Refraction
(d) Total internal reflection
Answer:
Which one of the following places did Kunwar Singh, a prominent leader of the Revolt of 1857 belong to
(a) Uttar Pradesh
(b) Rajasthan
(c) Madhya Pradesh
(d) Bihar
Answer:
Which of the following ethnic elements is not evidenced for in the skelatal remains of Harappan sites?
(a) Mongoloid
(b) Negrito
(c) Alpine
(d) Mediterranean
Answer: