Mercury is the only metal that remains liquid at 0°C. this is due to . . . . . . . .
A. Its low ionization capacity
B. Its high ionization energy and loose metallic bond
C. Its high vapour pressure
D. Its high molecular radius
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Match
List I with
List II .
List-I
List-II
a. German silver
1. Tin
b. Solder
2. Nickel
c. Bleaching powder
3. Sodium
d. Hypo
4. Chlorine
A. a-2, b-1, c-4, d-3
B. a-1, b-4, c-3, d-2
C. a-4, b-3, c-2, d-1
D. a-3, b-2, c-1, d-4
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What is another name for calcium oxide?
A. Quick lime
B. Cement
C. Lime soda
D. Baking soda
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Constantan is an alloy of copper and . . . . . . . .
A. iron
B. nickel
C. aluminium
D. tin
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How Magnesium Milk is Used
A. laxative
B. painkillers
C. sedative
D. antibiotic
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The sulphide ores are converted into oxides by heating strongly in the presence of excess air. This process is known as:
A. Burning
B. Blazing
C. Heating
D. Roasting
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Which of the following is the least reactive?
A. magnesium
B. mercury
C. hydrogen
D. aluminium
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Which one of the following is not an alkaline earth metal?
A. barium
B. calcium
C. magnesium
D. sodium
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Natrium is the Latin name of which of the following:
A. Lithium
B. Sodium
C. Rubidium
D. Potassium
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The softest mineral, Talc (Soapstone) is mainly
A. Manganese Silicate
B. Sodium Silicate
C. Sodium Phosphate
D. Magnesium Silicate
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Tooth enamel is made up of which one of the following calcium compounds?
A. Calcium carbonate
B. Calcium sulphate
C. Calcium hydroxide
D. Calcium phosphate
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Which one of the following colours is supplied by Sodium Chromate?
A. Blue
B. Red
C. Green
D. Black
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Which one of the following metals is accessed in the native state?
A. Aluminium
B. Gold
C. Chromium
D. Zinc
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A combustible gas is liberated when caustic soda solution is heated with
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Chemically 'Plaster of Paris' is
A. Calcium Sulphate
B. Calcium Carbonate
C. Calcium Oxide
D. Calcium Oxalate
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Fill in the blanks using the correct option for the following statements from the given alternatives. On heating the . . . . . . . ., a plaster of Paris is obtained.
A. Carbonic acid
B. Baking soda
C. Gypsum
D. Calcium carbonate
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Which of the following compounds is used in gun powder?
A. NaNO3
B. KNO3
C. LiNO3
D. None of these
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. . . . . . . . is never found as a free element in nature.
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The most abundant metal in the earth's crust is
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Doctors, Artists and Sculptors use Calcium Sulphate which is popularly known as
A. Quick lime
B. Limestone
C. Bleaching powder
D. Plaster of Paris
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