GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 034
331). Among the following chemical compounds, which one has the highest reducing
power ?
A). AsH3
B). BiH3
C). NH4
D). PH3
Answer: BiH3
332). Which one of the following gases when passed through alkaline solution of pyrogallol produces brown solution ?
A). Oxygen
B). Nitrogen
C). Hydrogen
D). Carbon dioxide
Answer: Oxygen
333). Which one of the following reactions occurs as a result of lighting?
A). Hydrogen and Oxygen combine to form water which becomes a part of rain
B). Solid form of water changes to vapour phase
C). Nitrogen and oxygen react together to form oxides of nitrogen
D). Nitrogen and hydrogen violently react to yield ammonia
Answer: Hydrogen and Oxygen combine to form water which becomes a part of rain
334). Which one of the following pigments is used for making a yellow paint ?
A). Basic lead carbonate
B). Lead chromate
C). Lead oxide
D). Chromic oxide
Answer: Chromic oxide
335). The decreasing order of basicity of Na^+,K^+,Li^+,Cs^+
is
A). Na^+,K^+,Li^+,Cs^+
B). Na^+,K^+,Cs^+,Li^+
C). Li^+,Na^+,K^+,Cs^+
D). Cs^+,K^+,Na^+,Li^+
Answer: Cs^+,K^+,Na^+,Li^+
336). Which one of the following statements is not Answer:?
A). Carbon dioxide is heavier than air
B). The solubility of carbon dioxide decreases with the increase in pressure
C). Carbon monoxide reduces metal oxides to metals
D). Carbon monoxide is used in the manufacture of methanol
Answer: The solubility of carbon dioxide decreases with the increase in
pressure
337). The purpose of adding gypsum to powdered clinker during the grinding process of cement is to
A). improve the colour and texture of cement
B). form a homogeneous mixture
C). accelerate the rate of setting
D). retard the rate of setting
Answer: accelerate the rate of setting
338). Consider the following chemical compounds
1.Calcium dihydrogen phosphate
2.Calcium dihydrogen phosphate
3.Calcium sulphate
4.Ammonium phosphate
which of the following form the constituents of super phospates?
A). 1 only
B). 2,3and4
C). 1 and 3
D). 2 and 4
Answer: 1 and 3
339). Consider the following statements : Rutherford's alpha particle-scattering
experiment proved that nucleus
1. contains massive particles
2. is a positively charged centre
3. is quite stable
4. is quite in stable
which of these statements are correct?
A). 1, 2 and 3
B). 1 and 2
C). 2 and 3
D). 1 and 3
Answer: 1, 2 and 3
340). In the reaction of potassium permanganate in acidic medium (M01. wt. 158.04) with ferrous ammonium sulphate (M01. wt. 392.14), the change in the oxidation state of manganese in potassium permanganate is
A). +5 to +2
B). +6 to 2
C). +7 to +2
D). +7 to +3
Answer: +7 to +2
power ?
A). AsH3
B). BiH3
C). NH4
D). PH3
Answer: BiH3
332). Which one of the following gases when passed through alkaline solution of pyrogallol produces brown solution ?
A). Oxygen
B). Nitrogen
C). Hydrogen
D). Carbon dioxide
Answer: Oxygen
333). Which one of the following reactions occurs as a result of lighting?
A). Hydrogen and Oxygen combine to form water which becomes a part of rain
B). Solid form of water changes to vapour phase
C). Nitrogen and oxygen react together to form oxides of nitrogen
D). Nitrogen and hydrogen violently react to yield ammonia
Answer: Hydrogen and Oxygen combine to form water which becomes a part of rain
334). Which one of the following pigments is used for making a yellow paint ?
A). Basic lead carbonate
B). Lead chromate
C). Lead oxide
D). Chromic oxide
Answer: Chromic oxide
335). The decreasing order of basicity of Na^+,K^+,Li^+,Cs^+
is
A). Na^+,K^+,Li^+,Cs^+
B). Na^+,K^+,Cs^+,Li^+
C). Li^+,Na^+,K^+,Cs^+
D). Cs^+,K^+,Na^+,Li^+
Answer: Cs^+,K^+,Na^+,Li^+
336). Which one of the following statements is not Answer:?
A). Carbon dioxide is heavier than air
B). The solubility of carbon dioxide decreases with the increase in pressure
C). Carbon monoxide reduces metal oxides to metals
D). Carbon monoxide is used in the manufacture of methanol
Answer: The solubility of carbon dioxide decreases with the increase in
pressure
337). The purpose of adding gypsum to powdered clinker during the grinding process of cement is to
A). improve the colour and texture of cement
B). form a homogeneous mixture
C). accelerate the rate of setting
D). retard the rate of setting
Answer: accelerate the rate of setting
338). Consider the following chemical compounds
1.Calcium dihydrogen phosphate
2.Calcium dihydrogen phosphate
3.Calcium sulphate
4.Ammonium phosphate
which of the following form the constituents of super phospates?
A). 1 only
B). 2,3and4
C). 1 and 3
D). 2 and 4
Answer: 1 and 3
339). Consider the following statements : Rutherford's alpha particle-scattering
experiment proved that nucleus
1. contains massive particles
2. is a positively charged centre
3. is quite stable
4. is quite in stable
which of these statements are correct?
A). 1, 2 and 3
B). 1 and 2
C). 2 and 3
D). 1 and 3
Answer: 1, 2 and 3
340). In the reaction of potassium permanganate in acidic medium (M01. wt. 158.04) with ferrous ammonium sulphate (M01. wt. 392.14), the change in the oxidation state of manganese in potassium permanganate is
A). +5 to +2
B). +6 to 2
C). +7 to +2
D). +7 to +3
Answer: +7 to +2
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