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WorksheetsRevision Ch.5_Acid, bases and salts
Total questions: 27
Worksheet time: 27mins
When the soil is too Basic, what do you add to neutralise the effect ?
Basic Quicklime
Phenolphthalein
Organic Matter
Nitric Acid
When neutralization reaction happens, they form -
Salt and Sodium Chloride
Salt, Water and Heat
Heat and Sugar
Indicators are -
Substances which are nor Acidic or Basic
Substances that are used to test the Acidic or Basic nature of a substance
Substances which have both chemical and physical properties
None of the Above
When do you take an Antacid ?
When you are Hungry
When the soil is too Acidic
When you have a Gastric problem in your stomach
When the Factory wastes are disposed in waterbodies
None of the Above
A child got stung by a bee. Some of the Elders suggest to add Baking Soda or Lemon Juice. Which one do you think is Appropriate ?
Lemon Juice
Water
Baking Soda
None of the Above
Before Factory wastes are disposed out to Waterbodies, why do they add basic substances ?
So that the Factory wastes decomposes in Waterbodies
Because they have Respect towards them
So that they do not harm the Aquatic animals and Plants
None of the Above
Neutralization is a reaction between
Two acids
Two bases
One Acid and one Base
None of them
What's another name for Antacid ?
(a)
Substances which are bitter in taste and feel soapy in texture are known as
Bases
Acid
Identify the image.
Fungus
Lichens
Plant
Acids turn ____________ and Bases turn_____________.
Both turn red litmus blue
Blue litmus red, Red litmus blue
Both turn blue litmus red
No change
Change in colour in an acid and a base depends on the type of indicator.
True
False
If an indicator gives changes colour with a acid it does not change colour with an acid.
True
False
Anything with a pH of 7 is a(n)
neutral substance
acid
base
chemical salt
Which of the following is a Mineral Acid?
Citric Acid
Oxalic Acid
Glycolic Acid
Sulphuric Acid
Fruits such as oranges , lemon etc, contain ........................... Acid
Citric
Lactic
Ascorbic
Acetic
If the given solution neither changes the colour of the red litmus nor blue litmus paper , it is ..........................
An Acid
A base
Neutral
Colourless
Hydrochloric Acid solution affect .......................... litmus paper
Red
Blue
Both of these
None of these
Bases turn yellow turmeric paper to ...........................
Green
Red
Pink
Orange
Which method is recommended to dilute an acid
An acid is added to water
Water added to acid
Manure is added , when the soil is too ...................................
Acidic
Basic
Neutral
None of these
Acid can prevent bacteria from growing
True
False
NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?
Acid
Base
Neither (Neutral)
HCl is found in household products, including some toilet bowl cleaners. Is HCl an acid or a base?
Acid
Base
Neither (Neutral)
Is pure water acidic, basic, or neutral?
Acidic
Basic
Neutral
sulfuric acid
HSO3
H2SO3
H2SO4
H3SO4
