BITSAT 2019 Revision Test 9 for JEE & BITSAT Exams

Question 1

In the diagram resistance between any two junctions is R. Equivalent resistance across terminals A and B is

Question 2

An infinite number of concentric rings each carry a positive and negative charge Q alternatively. Their radii are 1, 2, 4, 8... meters in geometric progression as shown in the figure. The potential at the centre of the rings will be-

Question 3

The temperature drop through each layer of two layer furnace wall is shown in figure. Assume that the external temperature T₁ and T₃ are maintained constant and T₁ > T₃. If the thickness of the layers x₁ and x₂ are the same, which of the following statements are correct.

Question 4

The de-Broglie wavelength of a bicycle is

, Its load is changed such that its velocity and energy both are four times. Its new wavelength will be

Question 5

The number of ions produced in water by dissolution of the complex having the empirical formula, CoCl₃4NH₃, is

Question 6

The complexes involving multidendate ligands are more stable in comparison to those with only unidentate ligands because:

Question 7

The reaction of an alkene X with bromine produces a compound Y, which has 22.22% C, 3.71% H and 74.07% Br. The ozonolysis of alkene X gives only one product. The alkene X is:
[Given: atomic mass of C = 12; H = 1; Br = 80]

Question 8

An aqueous solution contains 0.10 M H₂S and 0.20 M HCl. If the equilibrium constants for the formation of HS– from H₂S is 1.0×10^-7 and that of S^2- from HS^– ions is 1.2×10^-13 then the concentration of S^2- ions in aqueous solution is

Question 9

The pH values of (i) 0.1 M HCl_aq, (ii) 0.1 M KOH, (iii) tomato juice and (iv) pure water follow the order

Question 10

A satellite moving with velocity v in a force free space collects stationary interplanetary dust at a rate of

where M is the mass (of satellite +dust) at that instant. The instantaneous acceleration of the satellite is

Question 11

A pack of cards is counted with face downwards. It is found that one card is missing. One card is drawn and is found to be red. Find the probability that the missing card is red.