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1
Lime water is a solution of ________________
in water
NaOH in water
NaCI in water
2
Which among the following is the strongest acid ?
Acetic acid
Sulphuric acid
Formic acid
Tannic acid
3
Which of the following is/are strong acids ?
Sulphuric Acid
Nitric Acid
Oxalic Acid
Both A and B
4
The taste of an acid is ___________________
Salty
Sour
Sweet
Bitter
5
The two kinds of litmus paper are:
Blue and red
Blue and yellow
Red and green
Yellow and red
6
Vinegar contains _______________ acid.
Formic
Lactic
Acetic
Hydrochloric
7
If the pH of a solution is 10 the given solution is __________________
Acidic
Neutral
Basic
None of these
8
The substances whose odour changes in an acidic or basic media are called _________________.
Indicators
Visual indicators
Olfactory indicators
Universal indicators
9
Which of the following acid is present in sour milk?
Tartaric acid
Citric acid
Lactic acid
10
Which of the following acid/bases is known as the king of chemicals?
Sulphric acid
Nitric acid
Sodium hydroxide
Ammonium hydroxide
11
HCI
12
Phenolphthalein is a synthetic indicator and its colours in acidic and basic soluction respectively are _____________
Red and blue
Pink and colourless
Colouress and pink
13
Which is used as an intacid to cure acidity ?
Calcium hydroxide
Magnesium hyroxide
Ammonia
14
A non-metallic element is converted into a compound X after a series of reactions. A little amount of X when tested with blue litmus turns to red. X on complete rection with another compound Y gave the product which did not respond to litmus test. Identify the correct sequence of the reactions.
1.
2.
3.
4.
1342
4132
2314
4321
15
Common name of is ____________________
Oil of vitriol
Muriatic acid
Blue vitriol
Green vitriol