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BITSAT 2019 Revision Test 5

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Question 1

The magnetic flux through a stationary loop with resistance R varies during interval of time T as ϕ = at (T - t). The heat generated during this time neglecting the inductance of loop will be

Question 2

Four identical metallic plates are arranged as shown in the figure. If the distance between each plate is d, then capacitance of the given system between points A and B is (Given d <<A, where A is area of plate)

Question 3

Ice at 0°C is added to 200 g of water initially at 70°C in a vacuum flask. When 50 g of ice has been added and has all melted, the temperature of the flask and contents is 40°C . When a further 80 g of ice has been added and has all melted, the temperature of the whole is 10°C . Calculate the specific latent heat of fusion of ice.

[Take Sw = 1 cal/gm °C]

Question 4

A stone tied to a string of length L is whirled in a vertical circle with the other end of the string at the centre. At a certain instant of time, the stone is at its lowest position and has a speed u. The magnitude of the change in its velocity as it reaches a position where the string is horizontal is

Question 5

Photoelectrons are ejected from a metal when light of frequency v falls on it. Pick out the wrong statement from the following.

Question 6

Which among the following elements has the highest first ionization enthalpy?

Question 7

The compound which on reaction with aqueous nitrous acid at low temperature produces oily nitrosamine is

Question 8

Which one of the following compounds is an anti-fertility drug?

Question 9

In reaction initial concentration of B was 1.5 times of [A], but at equilibrium the concentrations of A and B become equal. The equilibrium constant for the reaction is :

Question 10

______ mass of a substance is defined as the ratio of mass of one molecule of a substance to 1/12th of mass of one 12C atom.

Question 11

Find the domain of the relation, R = {(|x|, x): x is integer}

Question 12

 for

Question 13

The line L passes through the points of intersection of the circles x2 + y2 = 25 and x2 + y2 –8x + 7 = 0. The length of perpendicular from centre of second circle onto the line L, is

Question 14

If u = 2i + 2j – k and v = 6i – 3j + 2k then a unit vector perpendicular to both u and v is

Question 15

Given sum of the first n terms of an A .P. is 2n+3n2. Another A .P. is formed with the same first term and double of the common difference, the sum of n terms of the new A .P. is:
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Sep 1JEE & BITSAT