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Online Tests
ECAT Chemistry Chapter 13 S-Block Elements Online Test MCQs With Answers
Question # 1
The strong alkaline solution in water is of metal:
Choose an answer
Potassium
Sodium
Lithium
Magnesium
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Question # 2
Gypsom added in cement is:
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1%
2%
3%
4%
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Question # 3
Chile saltpetre has the chemical formule
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NaNO
3
KNO
3
Na
2
B
4
O
7
Na
2
CO
3
.H
2
O
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Question # 4
Alkali metals have electrons in s-orbital:
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one
two
three
Four
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Question # 5
Carbonates of alkaline earth metals decomposes to respectgive metal
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Oxides
Nitrates
Sulphates
CO
2
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Question # 6
Chlorophyll contains in it
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Li
Na
Mg
Ca
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Question # 7
Which are being formed by alkali metals?
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oxides
nitrides
carbides
peroxides
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Question # 8
Gypsom added in cement is
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1%
2%
3%
4%
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Question # 9
All alkali metals react with acetylene to form acetylides except
Choose an answer
Li
Na
K
Rb
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Question # 10
CO
2
absorber used in breathing tanks is
Choose an answer
K
2
O
2
K
2
O
KO
2
Na
2
O
2
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Question # 11
Which one is alkali metal in them?
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Rubidium
Magnesium
Calcium
Barium
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Question # 12
The element caesium bears resemblance with:
Choose an answer
Ca
Cr
Both of the above
None of these
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Question # 13
Milk of lime is
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MgO
CaO
Ca(OH)
2
Mg(OH)
2
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Question # 14
Which element is deposited at the cathode during the electrolysis of brine in Nelson's cell?
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H
2
Na
Cl
2
O
2
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Question # 15
Which one is alkaline earth metal?
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Sodium
Beryllium
Potassium
Lithium
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Question # 16
Which one o the following does not belong to alkaline earth metals?
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Be
Re
Ba
Rn
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Question # 17
Lime is often used as an agent:
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dehydrating
hydrating
oxidizing
reducing
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Question # 18
Carbonates of alkaline earth metals decomposes to respective metal
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oxides
nitrates
sulphates
CO
2
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Question # 19
Which of the following sulphates is not soluble in water?
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Sodium sulphate
Potassium sulphate
Zinc sulphate
Barium sulphate
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Question # 20
Which one of the following is not an alkali metal?
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Francium
Caesium
Rubidium
Radium
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Question # 21
Arabic word "alkali" means:
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The ashes
the sour
The fragrant
Caustic
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Question # 22
Plaster of paris is mixed with water, the expansion in volume is:
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1%
2%
3%
4%
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Question # 23
Down's cell is used to prepare:
Choose an answer
Sodium carbonate
Sodium bicarbonate
Sodium metal
Sodium hydroxide
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Question # 24
d-block elements belong to groups
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I-A & II-A
III-A to VIII-A
I-B to X-B
Lanthanides
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Question # 25
Maximum shielding effect is observing in
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Li
Be
Mg
Ca
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Question # 26
Lime is often used as an agent
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dehydrating
hydrating
oxidizing
reducing
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Question # 27
Transition elements belong to
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I-A & II-A
III-A to VIII-A
I-B to X-B
Lanthanides
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Question # 28
Acidic soils are neutralized by adding:
Choose an answer
Plaster of paris
Brine
Lime
Milk of magnesia
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Question # 29
All alkali metals react with acetylene to form acetylides except:
Choose an answer
Li
Na
K
Rb
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Question # 30
The oxides of beryllium are
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acidic
basic
amphoteric
none of these
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