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Practice Test - Chemistry 13

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Question 1

A stream of electrons from a heated filament was passed between two charged plates kept at a potential difference V esu. If e and m are charge and mass of an electron, respectively, then the value of

(where

is wavelength associated with electrons wave) is given by

Question 2

The two functional groups present in a typical carbohydrate are:

Question 3

Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behavior is that graphite

Question 4

The rate of a reaction doubles when its temperature changes from 300K to 310K. Activation energy of such a reaction will be:
(R = 8.314 JK^–1 mol^–1 and log 2 = 0.301)

Question 5

If at 298K, the bond energies of C–H, C–C, C=C and H–H bonds are respectively 414, 347, 615 and 435 kJ mol^-1, the value of enthalpy change for the reaction
at 298 will be

Question 6

Synthesis of each molecule of glucose in photosynthesis involves:

Question 7

The increasing order of the ionic radii of the given isoelectronic species is :

Question 8

Identify the correct statement among the following:

Question 9

Which one of the following has a square planar geometry?

Question 10

Which of the following on thermal decomposition yields a basic as well as an acidic oxide ?

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Nov 11JEE & BITSAT