11The acid-base indicator extracted from lichen is ______________.
(1 Point)
turmeric
china rose
litmus
vanilla extract
12The substance that does not contain an acid is _____________________.
(1 Point)
soap
lemon juice
curd
tomato
13Blue litmus paper is dipped in a solution. It remains blue. The nature of solution is ________________.
(1 Point)
acidic
acidic or basic
basic or neutral
neither acidic nor basic
14Bitter taste is one of the characteristics of ________________.
(1 Point)
salt
acid
base
indicator
15Identify the liquid which will change its colour on adding turmeric indicator:
(1 Point)
hydrochloric acid
nitric acid
sulphuric acid
sodium hydroxide
16Secretion of large amount of acid in the stomach causes indigestion. It can be relieved by taking ______________.
(1 Point)
milk of magnesia
calamine solution
hydrochloric acid
common salt
17In acidic solution China rose indicator turns _______________.
(1 Point)
green
black
magenta
blue
18Statement 1- Heat is always produced in neutralisation reaction.
Statement 2- Factory wastes are neutralised before disposing it into the water bodies.
(1 Point)
both statement 1 and statement 2 are correct
both statement 1 and statement 2 are incorrect
statement 1 is correct but statement 2 is incorrect
statement 1 is incorrect but statement 2 is correct
19Ascorbic acid is commonly known as _________________.
(1 Point)
Vitamin A
Vitamin B
Vitamin C
Vitamin D
20The mode of heat transfer that takes place in liquids and gases but not in solids is ______________________________.
(1 Point)
conduction
radiation
convection
insulation
Answers
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Answer:
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Answered by
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Answer:
litmus
soap
basic
base
sodium hydroxide
milk of magnesia
green I'm not sure
statement 1 is correct statement 2 is also.
vitamin C
convention
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