GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 114

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 114

1131). Breathalyzers determine alcohol content through the redox reaction

Cr2O2^7+C2H5OH-->Cr^3++C2H4O2

Which substance is being reduced?

A). Cr^3+

B). Cr2O7^2

C). C2H5OH

D). Cr^3+ and Cr2O7^2

Answer: C2H5OH

   

1132). Which oxide of nitrogen is formed when ammonium nitrate is heated?

A). N2O

B). NO

C). NO2

D). N2O5

Answer: N2O

   

1133). Why aspirin has a sour taste?

A). The acidic nature of aspirin

B). The sour flavour is added to help prevent overdosing

C). Aspirin is made sour as mandated child safety feature

D). It is the basic nature of aspirin

Answer: The acidic nature of aspirin

   

1134). Rusting of iron is ........... process

A). oxidation

B). reduction

C). neither oxidation nor reduction

D). both oxidation and reduction

Answer: oxidation

   

1135). Match List l with List ll correctly and select your answer using the codes given below

List l                                          List II

a) Ammonium sulphate               1) Fertilizer

b) Chloroform                            2) Reducing agent

c).Carbon                                  3) Anaesthesia

d) Hydrogen peroxide                 4) Bleaching agent

Codes:

a b c d

A). 1 3 2 4

B). 1 2 3 4

C). 2 3 4 1

D). 3 2 1 4

Answer: 1 3 2 4

1136). Consider the following statements:

Assertion (A): Drinking soda is mildly acidic in nature.

Reason (R): It contains carbon dioxide.

Now select your answer according to the coding scheme given below:

A). Both (A) and (R) are, true and (R) is the correct explanation of (A)

B). Both (A) and (R) are true, but (R) is not the correct explanation of (A)

C). (A) is true, but (R) is false

D). (A) is false, but (R) is true

Answer: Both (A) and (R) are, true and (R) is the correct explanation of (A)

   

1137). Enriched Uranium is

A). Uranium U-238

B). Uranium U-235

C). Uranium mixed with Thorium

D). Uranium mixed with Plutonium

Answer: Uranium U-235

   

1138). The compound whose aqueous solution is basic in nature is

A). NaNO3

B). Na2CO3

C). Na2SO4

D). MgCl2

Answer: NaNO3

   

1139). The mobility of H^+ ion in aqueous solution is high because

A). of the small size of H^+ ion

B). it has no electron

C). it exhibits Grothus type of conduction

D). hydrogen is the lightest element

Answer: it exhibits Grothus type of conduction

   

1140). The molarity of sulphuric acid is 2M. The normality of sulphuric acid is ...........N.

A). 2

B). 4

C). 3

D). 1

Answer: 4