When a wave is intercepted by an article, the rays bend round the obstacle particle. The phenomenon is known as-
(A) Interference
(B) Diffraction
(C) Polarisation
(D) Total internal reflection
Plant which does not bear flower but have seed–
(A) Orchides
(B) Gymnoperm
(C) Angiosperm
(D) Crytogamus
Which one is known as magnetite-
(A)
(B)
(C)
(D)
Wine contains-
(A)
(B)
(C)
(D) Glucose
Rickets is caused due to the deficiency of-
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Which proteins is main constituent of milk?
(A) Casein
(B) Insulin
(C) Myosine
(D) Keratin
Ethanol containing 5% water is known as-
(A) Absolute alcohol
(B) Dilute alcohol
(C) Power alcohol
(D) Rectified spirit
Petroleum is found-
(A) On the surface of the earth
(B) In the atmosphere
(C) In arctic ocean
(D) Deep under the surface of the earth
The chemical name of baking soda is
(A) Sodium carbonate
(B) Sodium bicarbonate
(C) Sodium chloride
(D) Sodium nitrate
The metal always found in free state is__
(A) Gold
(B) Sodium
(C) Silver
(D) copper
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