Chemistry-
General
Easy
Question
The compound formed by reaction of ethylene glycol and periodic acid 
is:
- carbon dioxide
- formic acid
- formaldehyde
- glyoxal
The correct answer is: formaldehyde
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Ethyl alcohol is denatured by adding:
Ethyl alcohol is denatured by adding:
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The compound which reacts fastest with Lucas reagent at room temperature is:
The compound which reacts fastest with Lucas reagent at room temperature is:
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The boiling point of ethanol is higher as compared to the boiling point of diethyl ether though both have the same molecular formula. This is due to:
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For one mole Df glycerol, moles of acetyl chloride required for complete acetylation are:
For one mole Df glycerol, moles of acetyl chloride required for complete acetylation are:
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Consider the two insulating sheets with thermal resistance R1 and R2 as shown in figure. The temperature q is
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A horizontal cylinder has two sections of unequal cross-sections, in which two pistons can move freely. The pistons are joined by a string. Some gas is trapped between the pistons. If this gas is heated, the pistons will
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Six identical conducting rods are joined as shown in figure. Points A and D are maintained at temperatures 200°C and 20°C respectively. The temperature of junction B will be
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The figure shows two paths for the change of state of a gas from A to B. The ratio of molar heat capacities in path 1 and path 2 is
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One end of a conducting rod is maintained at temperature 50°C and at the other end ice is melting at 0°C. The rate of melting of ice is doubled if
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In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures, t1 and t2. The liquid columns in the two arms have heights l1 and l2 respectively. The coefficient of volume expansion of the liquid is equal to
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A very light rod AB is initially hung from a point P by means of two identical copper wires of the same length as the rod as shown in the figure. Particles of masses 1 kg and 4 kg are then attached to the ends A and B of the rod. The ratio of the fundamental frequencies of vibration of the wires AP and BP, i.e., 
=
A very light rod AB is initially hung from a point P by means of two identical copper wires of the same length as the rod as shown in the figure. Particles of masses 1 kg and 4 kg are then attached to the ends A and B of the rod. The ratio of the fundamental frequencies of vibration of the wires AP and BP, i.e., =
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The figures represent two snaps of a travelling wave on a string of mass per unit length, 
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Figure I
Figure II
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Figure I
Figure II
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Two blocks, each of mass m, are connected by a massless thread Y and A represent Young’s modulus and cross sectional area of wire respectively. The strain developed in the thread is
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A string is hanging from a rigid support. A transverse wave pulse is set up at the bottom. The velocity v of the pulse related to the distance covered by it is given as
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At t=0 source starts falling under gravity and a detector is projected upwards with a velocity 10 m/s. For the vertical upward motion of detector
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