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266. Why is it easier to swim in a sea than a river ?
A. Sea water it still while river water its running.
B. Salinity of sea water is more than that of river water.
C. Density of sea water is more than that of river.
D. None of these
Explanation:
267. When a vehicle passes, TV reception gets distorted. This is because
A. metal reflects radiowaves.
B. spark plug creates electromagnetic disturbances.
C. passing vehicle affects the sophisticated TV components.
D. modern vehicles use electronic ignition system.
Explanation:
268. The metal which can join well with the glass is
A. Silver
B. Nickel
C. Platinum
D. Chromium
Explanation:
269. The correct sequence of various regions in absorption spectrum is
A. Visible, ultraviolet, microwave, infra red
B. Infra red, gamma rays, ultraviolet, microwave
C. Ultra violet, visible, infra red, microwave
D. Microwave, visible, infra red, X - rays
Explanation:
270. If rubber tyres replace wheels in bullock carts then 1. speed of bullock cart increases. 2. load carrying capacity increases. 3. the capacity of bullock to pull the cart at a streatch increases.
A. 1 and 2 are correct
B. 2 and 3 are correct
C. 1 and 3 are correct
D. 1, 2 and 3 are correct
Explanation:
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