GROUP 2A 2013 PAPER QUESTIONS AND ANSWERS :: 2024 :: part7 : 1 to 5

Following Multiple choice objective type questions and answers will help you as a free online coaching for your TNPSC written exam preparation for 2017. These are useful study materials collected from previous year question papers. :

1.Which of the following statements about respiration is true ?
I.Respiration results in loss of dry weight in plants

II.The intermediate chemical reactions in the breakdown of sugar in respiration and synthesis of sugar in photosynthesis are much the same

III.The oxygen concentration is not known to affect respiration

IV.Respiration is a constructive process.

I,II and IV

II and IV

I and II only

I and III

2.Inhibition of gastric secretion is brought about by

Pancreozymin

Gastrin

Enterogastrone

Cholecytokinin

3.Arrange the sequences of mitosis in a logic way.
I.Centromeres of chromosomes attaches to spindle fibre

II.Chromatids uncoil and cytokinesis occur.

III.Asters and spindle fibres are formed.

IV.Centrometers split into two,daughters centromeres move apart

III,IV,I,II

II,IV,III,I

II,III,IV,I

III,I,IV,II

4.During the oxidation of acidified ferrous ammonium sulphate with dichromate solution

The oxidation number of chromium and iron changes from +6 to +3 and +3 to +2 respectively.

The oxidation number of chromium and iron changes from +3 to +6 and +3 to +2

respectively.

The oxidation number of chromium and iron changes from +6 to +3 and +2 to +3

5.The oxidation states of nitrogen in the following equations are
4[NH₃OH]⁺→N₂O+2NH₄⁺+2H⁺+3H₂O

(X)(Y)(Z)

+1 0 -3

-1 1 -2