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question_answer1)
Bleaching powder is soluble in cold water giving a milky solution due to -
A)
available chlorine done
clear
B)
lime present in it done
clear
C)
calcium carbonate formation done
clear
D)
the absorption of carbon dioxide from atmosphere done
clear
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question_answer2)
The acid used in making of vinegar is -
A)
formic acid done
clear
B)
acetic acid done
clear
C)
sulphuric acid done
clear
D)
nitric acid done
clear
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question_answer3)
Reaction of an acid with a base is known as -
A)
decomposition done
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B)
combination done
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C)
redox reaction done
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D)
neutralization done
clear
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question_answer4)
Antacids contain-
A)
weak base done
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B)
weak acid done
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C)
strong base done
clear
D)
strong acid done
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question_answer5)
Bleaching powder gives smell of chlorine because it -
A)
is unstable done
clear
B)
gives chlorine on exposure to atmosphere done
clear
C)
is a mixture of chlorine and slaked lime done
clear
D)
contains excess of chlorine done
clear
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question_answer6)
Plaster of parts is made from -
A)
limestone done
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B)
slaked lime done
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C)
quicklime done
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D)
gypsum done
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question_answer7)
Chemical formula of baking soda is -
A)
\[MgS{{O}_{4}}\] done
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B)
\[N{{a}_{2}}C{{O}_{3}}\] done
clear
C)
\[NaHC{{O}_{3}}\] done
clear
D)
\[MgC{{O}_{3}}\] done
clear
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question_answer8)
Washing soda has the formula -
A)
\[N{{a}_{2}}C{{O}_{3}}.7{{H}_{2}}O\] done
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B)
\[N{{a}_{2}}C{{O}_{3}}.10{{H}_{2}}O\] done
clear
C)
\[N{{a}_{2}}C{{O}_{3}}.{{H}_{2}}O\] done
clear
D)
\[N{{a}_{2}}C{{O}_{3}}\] done
clear
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question_answer9)
Plaster of Paris hardens by -
A)
giving of \[C{{O}_{2}}\] done
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B)
changing into \[CaC{{O}_{3}}\] done
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C)
combining with water done
clear
D)
giving out water done
clear
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question_answer10)
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains
A)
NaCl done
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B)
HCl done
clear
C)
LiCI done
clear
D)
KCl done
clear
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question_answer11)
Which of the following is acidic in nature -
A)
apple juice done
clear
B)
soap solution done
clear
C)
slaked lime done
clear
D)
lime done
clear
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question_answer12)
Which of the following acid is present in sour milk?
A)
glycolic acid done
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B)
lactic acid done
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C)
citrus acid done
clear
D)
tartaric acid done
clear
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question_answer13)
Acid turn blue litmus -
A)
green done
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B)
red done
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C)
yellow done
clear
D)
orange done
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question_answer14)
The reaction of metal with acid results in the formation of-
A)
only hydrogen gas done
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B)
only salt done
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C)
both salt and hydrogen gas done
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D)
none of these done
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question_answer15)
'Alum' is an example of-
A)
single salt done
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B)
double salt done
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C)
acids done
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D)
none of these done
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question_answer16)
Which of the following is 'quicklime' -
A)
CaO done
clear
B)
\[Ca{{(OH)}_{2}}\] done
clear
C)
\[CaC{{O}_{3}}\] done
clear
D)
\[CaC{{l}_{2}}.6{{H}_{2}}O\] done
clear
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question_answer17)
Slaked lime is prepared by adding water to -
A)
bleaching powder done
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B)
lime water done
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C)
milk of lime done
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D)
quick lime done
clear
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question_answer18)
Plaster of parts has the formula -
A)
\[CaS{{O}_{4}}.1/2{{H}_{2}}O\] done
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B)
\[CaS{{O}_{4}}.{{H}_{2}}O\] done
clear
C)
\[CaS{{O}_{4}}.1{\scriptstyle{}^{1}/{}_{2}}{{H}_{2}}O\] done
clear
D)
\[CaS{{O}_{4}}.2{{H}_{2}}O\] done
clear
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question_answer19)
Plaster of parts is obtained -
A)
by adding water to calcium sulphate done
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B)
by adding sulphuric acid to calcium hydroxide done
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C)
by heating gypsum to a very high temperature done
clear
D)
by heating gypsum to 373 K. done
clear
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question_answer20)
Which of the following is considered a mineral acid?
A)
Oxalic acid done
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B)
Lactic acid done
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C)
Citric acid done
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D)
Phosphoric acid done
clear
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question_answer21)
Which of the following is an alkali?
A)
\[Ca{{(OH)}_{2}}\] done
clear
B)
KOH done
clear
C)
\[Mg{{(OH)}_{2}}\] done
clear
D)
\[CaC{{O}_{3}}\] done
clear
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question_answer22)
When the stopper of a bottle containing colourless liquid was removed, the bottle gave smell like that of vinegar. The liquid in the bottle could be
A)
hydrochloric acid done
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B)
sodium hydroxide solution done
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C)
acetic acid solution done
clear
D)
saturated sodium hydrogen carbonate solution done
clear
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question_answer23)
Which of the following is not required to find the pH of a given sample?
A)
pH paper done
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B)
Litmus paper done
clear
C)
Universal indicator done
clear
D)
Standard pH chart done
clear
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question_answer24)
Universal indicator solution is named as such because
A)
it is available universally done
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B)
it has a universal appearance done
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C)
it can be used for entire pH range done
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D)
all the above are correct done
clear
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question_answer25)
Select the one that is having pH < 7.
A)
lime juice done
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B)
lime water done
clear
C)
human blood done
clear
D)
antacid. done
clear
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question_answer26)
Acids and bases are important because of
A)
their use in industry done
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B)
their effects on human health done
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C)
their effect on farmer's crop done
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D)
all the above are correct. done
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question_answer27)
Which of the following is a weak base?
A)
NaOH done
clear
B)
KOH done
clear
C)
\[N{{H}_{4}}OH\] done
clear
D)
none of these done
clear
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question_answer28)
Which of the following compounds is basic in nature?
A)
\[Ca{{(OH)}_{2}}\] done
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B)
\[CaC{{l}_{2}}.6{{H}_{2}}O\] done
clear
C)
\[NaCl\] done
clear
D)
\[CuS{{o}_{4}}.5{{H}_{2}}O\] done
clear
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question_answer29)
If pH of A, B, C and D are 9.5, 2.5, 3.5 and 5.5 respectively, then strongest acid is
A)
A done
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B)
C done
clear
C)
D done
clear
D)
B done
clear
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question_answer30)
Aqueous solution of which of the following salt will change the colour of red litmus to blue?
A)
\[N{{a}_{2}}C{{O}_{3}}\] done
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B)
\[N{{a}_{2}}C{{O}_{3}}.10{{H}_{2}}O\] done
clear
C)
Both [a] and [b] done
clear
D)
None of these done
clear
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question_answer31)
Which of the following is known as dead burnt plaster?
A)
Quicklime done
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B)
Slaked lime done
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C)
Limestone done
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D)
Gypsum done
clear
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question_answer32)
Which of the following pairs of substances are chemically same?
A)
Lime water and milk of lime done
clear
B)
Dead burnt plaster and gypsum done
clear
C)
Both the above done
clear
D)
None of the above done
clear
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question_answer33)
Baking powder is
A)
a mixture done
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B)
a compound done
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C)
an element done
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D)
a salt done
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question_answer34)
The chemical name of bleaching powder is
A)
calcium chloride done
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B)
calcium oxychloride done
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C)
calcium chloroxide done
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D)
none of above done
clear
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question_answer35)
Which of the following is not a hydrated salt?
A)
Blue vitriol done
clear
B)
Baking soda done
clear
C)
Washing soda done
clear
D)
Epsom salt done
clear
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question_answer36)
Which of the following is a strong acid:
A)
Acetic acid done
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B)
Citric acid done
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C)
Nitric acid done
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D)
Tartaric acid done
clear
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question_answer37)
The presence of which of the following acid causes indigestion:
A)
Citric acid done
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B)
Oxalic acid done
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C)
Acetic acid done
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D)
Hydrochloric acid done
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question_answer38)
When few drops of lemon are mixed with milk (i) it turns sour (ii) no change takes place (iii) properties of milk are changed (iv) properties of milk remain same Which of the above statements is/are correct?
A)
(ii) and (iii) done
clear
B)
(i) and (ii) done
clear
C)
(i) and (iii) done
clear
D)
(i) only done
clear
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question_answer39)
Which of the following is a strong base?
A)
Ammonium hydroxide (\[N{{H}_{4}}OH\]) done
clear
B)
Sodium hydroxide \[(NaOH)\] done
clear
C)
Water \[({{H}_{2}}O)\] done
clear
D)
Sulfuric acid \[({{H}_{2}}S{{O}_{4}})\] done
clear
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question_answer40)
Acids are...................... in taste while bases are.................... in taste
A)
sweet, salty done
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B)
sweet, sour done
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C)
sour, salty done
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D)
sour, bitter done
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question_answer41)
A base which dissolves in water is called
A)
soluble base done
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B)
alkali done
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C)
acid done
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D)
oxide done
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question_answer42)
Acid rain is caused due to...................
A)
\[C{{O}_{2}},{{O}_{2}},S{{O}_{2}}\] done
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B)
\[C{{O}_{2}},N{{O}_{2}},{{H}_{2}}\] done
clear
C)
\[S{{O}_{2}},{{N}_{2}},{{O}_{2}}\] done
clear
D)
\[C{{O}_{2}},S{{O}_{2}},N{{O}_{2}}\] done
clear
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question_answer43)
Acid contained in the sting of an ant is..................
A)
acetic acid done
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B)
formic acid done
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C)
lactic acid done
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D)
ascorbic acid done
clear
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question_answer44)
Natural indicator litmus is extracted from
A)
lichens done
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B)
earthworms done
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C)
ants done
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D)
algae done
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question_answer45)
When vinegar reacts with baking soda the gas evolved is
A)
hydrogen done
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B)
oxygen done
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C)
carbon dioxide done
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D)
nitrogen dioxide done
clear
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question_answer46)
On which of the following acid rain has adverse effects?
A)
Marble structures done
clear
B)
Historical monuments done
clear
C)
Aquatic life done
clear
D)
All of these done
clear
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question_answer47)
pH of human body varies within the range of
A)
6.0 to 6.5 done
clear
B)
5.5 to 5.8 done
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C)
7.0 to 7.8 done
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D)
7.0 to 11.0 done
clear
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question_answer48)
Calamine solution contains
A)
zinc hydroxide done
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B)
zinc carbonate done
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C)
sodium hydrogen carbonate done
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D)
magnesium hydroxide done
clear
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question_answer49)
Why bases are kept in glass bottles?
A)
Bases produce OH~ ions in aqueous solutions done
clear
B)
Basic solutions are conducting in nature done
clear
C)
Bases are corrosive in nature done
clear
D)
Basis have soapy texture done
clear
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question_answer50)
Which of the following statement regarding bases is false?
A)
Bases produce hydroxide ions when dissolved in water done
clear
B)
Bases are soapy to touch done
clear
C)
Bases are extremely corrosive in nature done
clear
D)
Basic solutions are non-conducting in nature done
clear
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question_answer51)
Which of the following statement is true?
A)
Acids are bitter in taste done
clear
B)
Bases are sour in taste done
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C)
The reaction between acid and a base is exothermic reaction done
clear
D)
The reaction between an acid and a base is endothermic reaction. done
clear
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question_answer52)
Common salt besides being used in kitchen can also be used as the raw material for making (i) washing soda (ii) bleaching powder (iii) baking soda (iv) slaked lime
A)
(i) and (ii) done
clear
B)
(i), (ii) and (iv) done
clear
C)
(i) and (iii) done
clear
D)
(i), (iii) and (iv) done
clear
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question_answer53)
To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is
A)
acidic done
clear
B)
neutral done
clear
C)
basic done
clear
D)
corrosive done
clear
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