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The smallest 3 digit prime number is:(1) 100(2) 101(3) 103(4) 109

Answer: (2) Let us consider the smallest three-digit number that is 100. 100/2 = 50 ∴ 100 does not belong... View Article

What is pisciculture?

Answer: The artificial reproduction, rearing and transplantation of fish is called pisciculture. It is also called fish farming. Explanation The... View Article

The relation between mean, median and mode is (a) Mode = 3(Median) – 2(Mean) (b) Mode = 2(Median) – 3(Mean) (c) Mode = 3(Mean) – 2(Median) (d) Mode = 2(Mean) – 3(Median)

Answer: (a) The empirical relationship between Mean, Mode and Median is given as Mean – Mode = 3(Mean – Median)... View Article

Write the formula of blue vitrol

Answer: The blue vitriol is also known as the Cu(II) sulphate pentahydrate or crystalline copper sulphate. The chemical formula for... View Article

Define the following terms:(1) Juvenile phase(2) Reproductive phase(3) Senescent phase

Answer: The phases stated above are different stages in the human, animal, and plant life cycles. Every organism has a... View Article

Which is not a green house gas?(1) Methane(2) Hydrogen(3) Carbon dioxide(4) Chloflurocarbon.

Answer: (2) Greenhouse gases are the gases that absorb the infrared radiations and create a greenhouse effect. Greenhouse effect is... View Article

The purest form of water that is considered to be(1) Water from well(2) Bore water(3) Rain water(4) Tap water

Answer: (3) Rain water Explanation The purest source of natural water is Rainwater. The rainwater directly comes from the condensation... View Article

What is role of HCl acid in our stomach?

Answer: When the digesting process begins, the activation of parietal cells in the gastric gland by the combined action of... View Article

Study of fossils is known as(1) Palaeobotany(2) Anatomy(3) Ornithology (4) Paleontology

Answer: (4) Paleontology is the research of Earth’s life history focused on fossils. It is one of the historical sciences... View Article

What is the full form of BCG?

Answer: Bacille Calmette-Guerin The full form of BCG is Bacille Calmette-Guerin. BCG is a weakened form of a bacteria called Mycobacterium... View Article

The unit of cell constant is___________

Answer: The cell constant depends on the area of the electrodes, distance between the electrodes and the nature of the... View Article

Define the principle focus of a concave mirror. Write the uses of a convex mirror.

Answer: Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on... View Article

Define peptization.

Answer: Peptization is the method of producing stable colloids using an electrolyte to split up and distribute a precipitate into... View Article

Name the plant having reticulate venation.(1) Musa(2) Oryza(3) Mangifera(4) Canna

Answer: (3) The process of vein formation on the leaf is known as venation. The two types of venation are... View Article

Life span of a W.B.C in man is(1) 50 days(2) 13 to 20 days(3) 100 days(4) None of the above

Answer: (2) 13 to 20 days The three main groups of blood cells are erythrocytes (RBC), leucocytes (WBC), and platelets. Leukocytes... View Article

The bond angle in H2O is 104.50. This fact can be explained with the help of:(1) VSEPR theory.(2) Molecular orbital theory.(3) Electronegativity difference between oxygen and hydrogen atoms.(4) Presence of hydrogen bond.

Answer: (1) An oxygen atom has 6 electrons in which two of them are bonded with a hydrogen atom leaving... View Article

Area of the four walls of a room is 108m2. If the height and length of the room are in the ratio of 2 : 5 and the height and breadth in the ratio 4 : 5, then the area, in m2, of the floor of the room is(1) 72(2) 54(3) 45(4) 24

Answer: (3) Let length of the room = l Highty of the room = h Breadth of the room =... View Article

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