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Showing posts with label Potassium Permanganate. Show all posts
Showing posts with label Potassium Permanganate. Show all posts

Thursday, 16 July 2015

CAPF 2015 Solved Questions Chemistry and Maths

Post 380

UPSC CAPF(AC) Exam 2015 Questions Solved

Question 26

Answer: A) 2 1 4 3

Explanation : 
  • Colour of Coumpound Urea is White
  • Colour of Hydrous copper sulphate is Blue
  • Colour of Lead sulphide is Black
  • Colour of Potassium Permanganate is Pinkish Purple

Question 27 The radius of a hydrogen atom is 10 to the power(-10) m. Number of hydrogen atoms necessary to have a length of one nanometre is

A) 6.023 x 10 power23
B) 10
C) 5
D) 100

Answer: C) 5

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Question 28 What is the average number of students studying in Standard I from all schools together?

A) 50
B) 48
C) 43
D) 46

Answer: D) 46

Question 29 What is the respective ratio of students studying in Standard III of schools A and B together to those studying in Standard VI of schools C and D together?

A) 53 : 52
B) 43 : 47
C) 25 : 27
D) 39 : 38

Answer: A) 53 : 52



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