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A uniform metal rod is used as a bar pendulum. If the room temperature rises by 10⁰C, and the coefficient of linear expansion of the metal of the rod is 2 x 10^{-6,/sup> per ⁰C, the period of the pendulum will have percentage increase of (A) -2 x 10^-3(B) -1 x 10^-3(C) 2 x 10^-3(D) 1 x 10^-3}

The fractional increment in time with temperature change ... (1) where, Δt/t is fractional increment α is coefficient of linear... View Article

The following velocity time graph shows the motion of a cyclist. Find (i) its acceleration (ii) its velocity and (iii) the distance covered by the cyclist in 15 seconds

(i) As velocity is constant, acceleration ia 0 m/s2 (ii) Here velocity is constant Hence, v = 20m/s (iii) s = v x t = 20 x 15 We get, = 300 m... View Article

Plotter accuracy is measured in terms of repeatability and (A) Buffer size (B) Resolution (C) Vertical dimension (D) Intelligence (E) None of the above

Plotter accuracy is measured in terms of repeatability and 'resolution'. Hence, the correct option is (B)... View Article

When the guard cells swell due to the entry of water the stomata gets __________ due to the osmotic potential (A) Closed(B) Flacid(C) Open(D) Rigid

Answer: (C) Open Due to the absorption of water, the guard cells swell, which results in the opening of stomatal pores. Whereas the shrinkage of... View Article

on a frictionless surface a block of mass m moving at speed v collides elastically with another block of same mass

Consider v' is speed of second block after collision The kinetic energy is conserved since the collision is elastic Using conservation of kinetic... View Article

Which is an albuminous seed? (a) Gram (b) Castor (c) Maize (d) Both (b) and (c)

Albuminous seeds are endospermic seeds, endosperm persists in the mature seed and acts as a food storage tissue. Monocotyledonous seeds are... View Article

Describe the term inertia with respect to motion

Inertia is defined as the tendency for an object to remain in uniform motion or at rest.A body continues to be in the state of rest or of motion... View Article

Who were the patrons?

A group of the rulers and rich class of people who provided protection and livelihood to the Brahmanas, poets and artists are known as 'Patrons'.... View Article

Placentation in Brassicaceae is: (A) Parietal (B) Marginal (C) Axile (D) Basal

Placentation in Brassicaceae is Parietal. Parietal Placentation : Ovules develop on the inner wall of the ovary or on the peripheral. It is... View Article

At a certain place the angle of dip 30⁰ and the horizontal component of earth’s magnetic field is 0.50 oerested. The earths’s total magnetic field (in oerested) is(A) √3(B) 1(C) (1/√3)(D) 1/2

We know that, On substituting We get, Therefore, the earth's total magnetic field is (1/√3) So, the correct option is (C)... View Article

The liquid material in the nucleus is (a) chromosomes (b) bacteria (c) nucleoplasm (d) nucleolus

The liquid material in the nucleus is 'nucleoplasm'. Nucleoplasm is a type of protoplasm that is composed of thick fluid and constitutes... View Article

The second trophic level in a lake is (a) Phytoplankton (b) Zooplankton (c) Benthos (d) Fishes

Zooplankton forms the second trophic level in an ecosystem. These are heterotrophic planktons that play an important role in the transfer of... View Article

Milindapanho is in the form of a dialogue between the king Menander and the Buddhist monk ______. (a) Nagasena (b) Nagarjuna (c) Nagabhatta (d) Kumarilabhatta

Milindapanho (in Pali) – consists of a dialogue between the Indo-Greek king Milinda/Menander and the monk Nagasena on various philosophical... View Article

Identify the examples of stock variables (a) Stock of capital (b) Number of persons employed (c) Total money supply (d) All of the above

Stock is defined as a variable that is measured at a particular point of time. As, stock of capital, total money supply and number of persons... View Article

On what dates of April, 2001 did Wednesday fall? (a) 1st, 8th, 15th, 22nd, 29th (b) 2nd, 9th, 16th, 23rd, 30th (c) 3rd, 10th, 17th, 24th (d) 4th, 11th, 18th, 25th

We shall find the day on 1st April, 2001 1st April 2001 = (2000 years + Period from 1.1.2001 to 1.4.2001) Odd days in 1600 years = 0 Odd days in... View Article

Retreating monsoon wind picks up moisture from which sea (a) Arabian sea (b) Bay of Bengal (c) Indian Ocean (d) Timor sea

Retreating monsoon wind pick up moisture from 'Bay of Bengal'. Withdrawal of south-west monsoon winds from skies of north India during months of... View Article

Fill in the blanks: __________is the living matter of cell (a) Mitochondria (b) Protoplasm (c) Nucleus (d) Ribosome

Protoplasm is the living matter of the cell. Protoplasm is the living part of the cell, which comprises of different cellular organelles.... View Article

A motorboat is racing towards the north at 25 kmh^-1 and the water current in that region is 10 kmh^-1 in the direction of 60⁰ east of south. The resultant velocity of the boat is:(a) 11 kmh^-1(b) 22 kmh^-1(c) 33 kmh^-1(d) 44 kmh^-1

Given velocity of the water current vc = 10 km/h velocity of the motorboat vb = 25 km/h Angle between north and south east = 1800 - 600 = 1200... View Article

Filtration is a method to separate the components of a (a) solution (b) mixture of a liquid and an insoluble substance (c) both (a) and (b) (d) pure substance

Filtration is a method to separate the components of a mixture of a liquid and an insoluble substance. Therefore the correct option is (b)... View Article

Which one of the following is required for growing microbes for industrial production of enzymes?

A) Bioreactor B) BOD incubator C) Sludge digester D) Industrial oven Answer: A) Bioreactor Explanation: Bioreactors are used for growing... View Article