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Optimum speed for turning on a banked road is (A) √(Rgtanθ) (B) √(Rgcotθ) (C) √(Rgsinθ) (D) √(Rgsecθ)

Optimum speed is the speed with which one can take turns on banked roads without wear and tear. The proper velocity or optimum v on a road... View Article

Ventilators are provided at the top of room (A) To bring oxygen for breathing (B) So that sunlight may enter the room (C) To maintain convectional currents to keep the air fresh in the room (D) To provide an outlet for carbon dioxide

To maintain convectional currents to keep the air fresh in the room In a room containing a mixture of hot and cold air, the hot air being less... View Article

Monocotyledonous seeds possess a single cotyledon which is represented by (A) Tegman (B) Endosperm (C) Scutellum (D) Aleurone

Scutellum A monocotyledonous seed has embryos that possess only one large cotyledon called scutellum. Generally, the scutellum is shaped like a... View Article

In glycolysis, glucose molecule is converted into which substance? (A) Lactic acid (B) Ethanol (C) Pyruvate (D) Amino acid

Pyruvate Glycolysis is the process in which glucose is broken down to produce energy. It produces two molecules of pyruvate, ATP, NADH and water.... View Article

What will Rs 500 amounts to in 10 years after its deposit in a bank which pays annual interest rate of 10% compounded annually?

Given, The amount deposited in the bank is Rs 500. At the end of first year, amount = Rs 500(1 + 1/10) = Rs 500 (1.1) At the end of 2nd year,... View Article

What is serum?

The serum is the liquid or undiluted part of the blood, which lacks clotting factors. Hence, it is formed after blood coagulation. The serum... View Article

15 pastries and 12 biscuit packets have been donated for a school fete. These are to be packed in several smaller identical boxes with the same number of pastries and biscuit packets in each. How many biscuit packets and how many pastries will each box contain?

Given that, Number of pastries = 15 Number of biscuit packets = 12 So, the required number of boxes which will contain equal number of both... View Article

Contamination of water with sewage is indicated by cysts of (A) Escherichia (B) Entamoeba (C) Pseudomonas (D) Leishmania

Entamoeba Contamination of water with sewage is indicated by cysts of Entamoeba histolytica. E. histolytica causes infection by ingestion of... View Article

Fill in the blank with a suitable adverb: She often comes _________ for the lectures. (A) Lately (B) Late (C) Lateness (D) Lateful

Late It is an adverb that denotes the way she comes and the time when she arrives for the lecture. Hence, among the given options 'late' is the... View Article

Which of the following is not a true statement about the entropy of a system? (A) Entropy is a measure of the randomness in a system (B) The entropy of an amorphous solid is greater than that of a crystalline solid (C) The entropy of a spontaneous reaction cannot decrease (D) The entropy of an isolated system will spontaneously increase or remain constant

The entropy of a spontaneous reaction cannot decrease Entropy is a measure of randomness in a system. Hence, entropy of a spontaneous reaction... View Article

At 80 degree C the vapour pressure of pure liquid A is 520 mm of Hg and that of pure liquid B is 1000 mm Hg. If a mixture solution of A and B boils at 80 degree and 1 atm pressure, the amount of A (mole percent) in the mixture is (1 atm = 760 mm Hg) (A) 50% (B) 54% (C) 32% (D) 44%

Given Let mole fraction of A in solution be xA and mole fraction of B in solution be XB Then, at 1 atm pressure On substituting, we get,... View Article

Name the stage of cell cycle at which one of the following events occur: (A) Chromosomes are moved to spindle equator. (B) Centromere splits and chromatids separate. (C) Pairing between homologous chromosomes takes place. (D) Crossing over between homologous chromosomes takes place.

(A) Chromosomes are moved to the spindle equator in the Metaphase. (B) Centrosomes split and chromatids separate in the Anaphase (C) Pairing... View Article

The extra embryonic membrane that involve in the formation of the placenta in human is (A) Chorion (B) Allantois (C) Yolk sac (D) Amnion

Chorion The placenta is defined as an organ that develops during pregnancy in mammals. The placenta provides oxygen and nutrients to the growing... View Article

From a given sample of uniform wire, two circular loops p and q are made, P of radius r and Q of radius nr. If the M.I of Q about its axis is 4 times than that of P, then value of n is: (A) (4)^1/3 (B) (4) ^2/3 (C) (4)^1/4 (D) (4)^1/2

Given that two circular loops P and Q are made, P of radius r and Q of radius nr. Let the mass of ring P = M Hence, mass of ring Q = nM (Since... View Article

A particle of mass 2 mg moves with constant speed and is found to pass two points 5.0 m apart in a time interval of 5 ms. Find the kinetic energy of the particle

1) 1 J 2) 2 J 3) 3 J 4) 4 J Answer: 1) 1 J Solution: Velocity = Distance/Time = 5/5 x 10-3 m/s = 1000 m/s Kinetic energy = (1/2)mv2... View Article

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