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Read the given passage and fill in the blanks by choosing an appropriate option.
The molar ratio of CO₂ and H₂O produced by the combustion of one mole of hydrocarbon _i_ is 5 : 4. The succeeding homologoue of i is _ii_ while preceding homologoue is _iii_.

A train starting from rest at one station, accelerates uniformly and attains a speed v after sometime. After travelling at this speed for sometime, it retards uniformly and stops at the next station. If R be the uniform resistance of the given track and the duration of the uniform motion is just half the total journey time, the average power supplied by the train engine is

A
B
C
D

Which of the following represents the correct increasing order of volume of oxygen required for complete combustion per mole under the same conditions?

A Propyne < Ethyne < Ethane < Ethene
B Ethyne < Ethene< Ethane < Propyne
C Propyne > Ethane > Ethyne > Ethene
D Propyne > Ethane > Ethene > Ethyne

Two plane mirrors A and B are aligned parallel to each other as shown in the figure. A light ray is incident at an angle 30° at a point just inside one end of A. The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflections (including the first one), before it emerges out, is


A 28
B 30
C 32
D 34

A particle starts from rest at time t = 0 and moves in a straight line with acceleration as plotted in given graph. The speed of the particle will be maximum at time ____.


A1 s
B2 s
C3 s
D4 s

Match column I with column II and select the correct option from the codes given below.


A (A) - (ii), (B) - (v), (C) - (iv), (D) - (vi), (E) - (i)
B (A) - (iv), (B) - (i), (C) - (ii), (D) - (iii), (E) - (v)
C (A) - (v), (B) - (iv), (C) - (iii), (D) - (ii), (E) - (i)
D (A) - (i), (B) - (ii), (C) - (iv), (D) - (v), (E) - (vi)

A rectangular block of glass PQRS has a refractive index 1.6. A pin is placed midway on the face PQ. When observed from the face PS the pin shall


A Appear to be near P always
B Appear to be at the centre of PS
C Appear to be near S
D None of these

Three identical resistors are connected across a voltage source V such that one of them is in parallel with other two, which are connected in series as shown. The power dissipated through the first one, compared to the power dissipated by each of the other two is _______.


AThe same
BHalf as much
CTwice as much
DFour times as much

You are given four sources of light each one providing a light of a single colour - red, blue, green and yellow. Suppose the angle of refraction for a beam of yellow light corresponding to a particular angle of incidence at the interface of two media is 90°. Which of the following statements is correct, if the source of yellow light is replaced with that of other lights without changing the angle of incidence?

A The beam of red light would undergo total internal reflection.
B The beam of red light would bend towards normal while it gets refracted through the second medium.
C The beam of blue light would undergo total internal reflection.
D The beam of green light would bend away from the normal as it gets refracted through the second medium.