General Science Chemistry Questions for SSC / UPSC Set 3

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General Science  Chemistry Questions for SSC / UPSC MCQs Set 3 Questions And Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Online free practice Quiz  – General Studies

1 .The detergent action of soap is due to its-
A.  Emulsifying property
B.  Alkalinity
C.  Solubility in water
D.  Preciptating power
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2 .Muddy water is treated with alum in purification process, it is termed as.
A.  adsorption
B.  emulsification
C.  absorption
D.  coagulation
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3 .The use of heat treatment of ore that includes smelting and roasting is termed:
A.  electrometallurgy
B.  Cryometallurgy
C.  Hydrometallurgy
D.  Pyrometallurgy
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4 .Plaster of Paris is made from -
A.  Marble
B.  Bauxite
C.  Limestone
D.  Gypsum
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5 .When or is heated generally in absence of air then process is called-
A.  smelting
B.  roasting
C.  calcinations
D.  none
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6 .Match List - I with List - II and
select the correct answer using thecodes given below the ListsList - I List - II
A. Blue 1. Sodium bicarbonatevitriol
B. Epson 2. Sodium hydroxidesalt
C. Baking 3. Magnesium sulphateSoda
D. Caustic 4. Copper sulphateSoda
Codes:
A B C D
A.  3 4 2 1
B.  4 3 2 1
C.  3 4 1 2
D.  4 3 1 2
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7 .Barium in a suitable form is administered to patients before an X -ray examination of the stomach, because-
A.  barium allows X – rays to pass through the stomach on account its transparency to X –rays
B.  barium is a good absorber of – rays and this helps the stomach to appear clerly in contrast with the other regions in the picture
C.  barium is a good absosrber of X – rays and this helps the stomach to appear clerly in contrast with the other regions in the picture
D.  barium slats are white in colour and this help the stomach to appear clearly in contrast with other region in the pictures
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8 .The chemical name of bakin soda is
A.  Sodium carbonate
B.  Sodium bicarbonate
C.  Sodium Chloride
D.  Sodium nitrate
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9 .Chemical formula of washing sodais
A.  Na2 SO4 10 H2 O
B.  NaHCO3
C.  Na2 CO3 10 H2O
D.  Ca (OH)2
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10 .Which of the following is responsible for permanent hardness of water?
A.  Magnesium bicarbonate
B.  Sodium chloride
C.  Calcium sulphate
D.  Calcium bicarbonate
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11 .Soda ash is the name for:
A.  Sodium hydroxide
B.  Anhydrous sodium carbonate
C.  Sodium bicarbonate
D.  Hydrated sodium carbonate
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12 .There are only two metals that are non-silver in color, they are
A.  Sodium & Magnesium
B.  Copper & Gold
C.  Palladium & Platinum
D.  Nickel & Zinc
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13 .The process of sudden cooling is known as -
A.  annealing
B.  diffusion
C.  quenching
D.  sedimentation
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14 .The soft silvery metallic element which ionizes easily when heated or exposed to light and is present in atomicclocks is.
A.  Califonrium
B.  Calcium
C.  Cerium
D.  Cesium
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15 .Heavy metal got their name because compared to other atoms they have
A.  Higher atomic number
B.  Higher atomic radii
C.  Higher atomic masses
D.  Higher densities
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