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The term that is used for the mode of nutrition in yeast, mushroom and bread-mould is (a) autotrophic (b) insectivorous (c) saprophytic (d) parasitic

Answer is 'saprophytic' These are all fungi. They absorb the nutrients from the dead and decaying matter. They secrete digestive juices which... View Article

Answer the following questions in a few words or a couple of sentences each. (i) How old was Evelyn when she went to the Royal Academy of Music? (ii) When was her deafness first noticed? When was it confirmed?

(i) Evelyn was sixteen years old when she went to the Royal Academy of Music (ii) Her deafness was first noticed when she was just eight years... View Article

What is the action of chlorine on excess NH3?

Chlorine when reacted with excess of ammonia give ammonium chloride and nitrogen gas. The reaction can be given as below 3Cl2 + 8NH3(excess)... View Article

The temperature of the system decreases in the process of (A) free- expansion (B) adiabatic expansion (C) isothermal expansion (D) isothermal compression

The temperature of the system decreases in the process of an 'Adiabatic expansion' Adiabatic expansion is defined as an ideal behaviour for a... View Article

What is ‘AGMARK’? (a) Name of Brand (b) A Marketing Research Organisation (c) Eggs supplied by Government-run cooperative (d) Agriculture marking on Agro products

Agriculture marking on Agro products A certification mark to assure the quality of agricultural products in India is known as 'AGMARK' or... View Article

What was Apartheid?

Apartheid was a system, which existed in some parts of South Africa from 1948 until the early 1990s. Apartheid refers to a system of... View Article

Solve: 3x + 4y = 25, 5x – 6y = -9 by elemination method

Given 3x + 4y = 25 ........... (1) 5x - 6y = -9 ............(2) Multiplying equation (1) by 3 and equation (2) by 2 9x + 12y = 75 .... (3)... View Article

The Buddha attained nirvana at ________ (a) Bodh Gaya (b) Sarnath (c) Sanchi (d) Kusinagara

Answer is Bodh Gaya Buddha attained Nirvana/enlightenment at Gaya, Magadha (Bihar) under a peepal tree (Bodhi tree), on the banks of river... View Article

Explain why:(a) Air is used to inflate tyres (b) Steel is used to make railway lines

(a) When air is blown the particles in air pushes the tyre walls from inside and exerts a pressure on them (b) Steel is used to make railway... View Article

A body crosses the topmost point of a vertical circle with critical speed. What will be its centripetal acceleration when the string is horizontal. (A) g (B) 2g (C) 3g (D) 6g

Consider the formula v2 = u2+2gh v2 = (√gl)2 + 2gl v2 = gl + 2gl v2 = 3gl v = (√3gl) Now, ac = (v2)/l ac = 3gl/l ac = 3g... View Article

One hormone hastens maturity period in juvenile conifers, a second hormone controls xylem differentiation, while the third increases the tolerance of plants to various stresses. They are respectively (a) Auxin, Gibberellins, Cytokinin (b) Auxin, Gibberellins, ABA (c) Gibberellin, Auxin, Cytokinin (d) Gibberelin, Auxin, ABA

Answer is Gibberellin, Auxin, ABA (1) Gibberellin is a plant hormone i.e. involved in a wide range of physiological responses in the plants.... View Article

The n rows each contaning in cells in series are joined in parallel. Maximum current is taken from this combination across an external resistance of 3Ω. If the total number of cells used is 24 and internal resistance of each cell is 0.5Ω, then (a) m = 8, n = 3 (b) m = 6, n = 4 (c) m = 12, n = 2 (d) m = 2, n = 12

Total number of cells = m x n = 24 ...... (1) When equivalent resistance is equal to external resistance of 3ohm, current is maximum Total... View Article

Colloidal solution of a liquid dispersed in solid is called gel (A) True (B) False

True Colloidal solution of a liquid dispersed in solid is called gel. Gels are a type of sols in which solid is dispersion medium and... View Article

The business assets of an organisation amount to Rs. 50,000 but the debts that remain unpaid are Rs. 80,000. What course of action can the creditors take if (a) The organisation is a sole proprietorship firm (b) The organisation is a partnership firm with Anthony and Akbar as partners. Which of the two partners can the creditors approach for repayment of debt? Explain giving reasons

(a) As the sole proprietor has unlimited liability in case of a sole proprietorship. Creditors can claim the personal assets of the proprietor in... View Article

A mass is supported on a frictionless horizontal surface. It is attached to a string and rotates fixed center at an angular velocity ω0 . If the length of the string and angular velocity both are doubled, the tension in the string which was initially T0 is now

If the length of the string and angular velocity is doubled, then On further calculation, we get, We get,... View Article

Phenol gives characteristic colouration with (A) Iodine solution (B) Bromine water (C) Aqueous FeCl3 solution (D) Ammonium hydroxide

The answer is 'aqueous FeCl3 solution'. Phenol gives violet or blue colouration with FeCl3 solution Hence, the correct option is (C)... View Article

The transverse nature of light is shown by (A) interference of light (B) refraction of light (C) polarization of light (D) dispersion of light

The transverse nature of light is shown by 'polarization of light'. Hence, the correct option is (C)... View Article

Which of the following is/are polynomials? (a) 4xz^2 (b) 4xz^2 + 4xy (c) 2xy (d) All of the above are polynomials

Polynomial is made up of two terms, namely Poly (meaning “many”) and Nominal (meaning “terms.”). A polynomial is defined... View Article

A point performs simple harmonic oscillation of period T and the equation of motion is given by x = a sin(ωt + π/6). After the elapse of what fraction of the time period the velocity of the point will be equal to half of its maximum velocity? (a) T/3 (b) T/12 (c) T/8 (d) T/6

Given X = a sin (ωt + π/6) aω/2 = aω cos (ωt + π/6) 1/2 = cos (ωt + π/6) ωt = π/6... View Article

A car runs at a constant speed on a circular track of radius 100 m, taking 62.8 seconds for every circular lap. The average velocity and average speed for each circular lap respectively is: (A) 0, 0 (B) 0, 10 m/s (C) 10 m/s, 10 m/s (D) 10 m/s, 0

Given Radius = 100 m Time interval = 62.8 seconds On a circular path in completing one turn, the distance travelled is 2πr while the... View Article

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