Chemistry (Civil Service Examination), Questions and Answers, GK for UPSC, Bank PO & All Exams

1. Assertion: Synthetic detergents can lather well in hard water.
Reason (R): Synthetic detergents form soluble calcium and magnesium salts with hard water. [2002]

2. Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not?

3. a dry cell (battery), which of the following are used as electrolytes? [2009]

4. Match List-I (Oxidation number) with List II (The element) and select the correct answer using the codes given below the lists: [2002]
List-I - List-II
(Oxidation number) - (The elements)
A. 2 - 1. Oxidation number of Mn in MnO2
B. 3 - 2. Oxidation number of S in H2S2O7
C. 4 - 3. Oxidation number of Ca in CaO
D. 6 - 4. Oxidation number of Al in NaAIH4 Codes:

5. Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance? [1996]

6. Assertion (A): In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group
Reason (R): In a group, the atomic radii generally increase from top to bottom. [2003]

7. Consider the following statements with reference to the periodic table of chemical elements: [2001]
1. Ionisation potential gradually decreases along a period
2. In a group of elements, electron affinity decreases as the atomic weight increases
3. In a given period, electronegativity decreases as the atomic number increases
Which of these statement (s) is/are correct?

8. Which one of the following materials is very hard and very ductile? [2000]

9. An aqueous solution of copper sulphate is acidic in nature because the salt undergoes [2001]

10. Which one of the following elements is essential for the construction of nuclear reactors? [1998]

General Knowledge

1. World Geography -Test-01
2. World Geography -Test-02
3. World Geography -Test-03
4. Geography of India -Test-01
5. Geography of India -Test-02
6. Geography of India -Test-03
7. Geography of India -Test-04
8. Geography of India -Test-05
9. History of India - Test - 01
10. History of India - Test - 02
11. History of India - Test - 03
12. History of India - Test - 04
13. History of India - Test - 05
14. History of India - Test - 06
15. History of India - Test - 07
16. INM-Test-01
17. INM-Test-02
18. INM-Test-03
19. INM-Test-04
20. INM-Test-05
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