According to Maharishi Kanad (Founder of Vaisheshik Darshan), matter is made up of

Atoms

Absolute zero temperature:

-273o C (0 K) 

(At this temperature the volume of all gases is zero.)

The pH parameter is used to express the acidity or alkalinity of a solution.

• If the pH is more than 7 the solution is alkaline.
• If the pH is less than 7 the solution is acidic.
  • pH value of milk 6.4
  • pH value of blood 7.4
  • pH value of alcohol 2.8
  • pH value of lemon 2.2

Uric acid is present in the urine [pH-6]

• The pH range of our body is 7.0 to 7.8.
• The pH scale was given by “Sorensen” in 1909.
• pH value of acid rain: less than 5.6.
• When the pH in the mouth falls below 5.5, tooth decay starts.

_____________ is used to protect the broken bones.

Plaster of Paris (Gypsum) (Calcium Sulphate)

The gases used in welding are 

Oxygen and Acetylene

What is Insulin

Protein

(In the human body, insulin controls the metabolism of carbohydrates.)

The acid used in car battery is 

Sulfuric acid

The gas released when soda water bottle is opened is 

Carbon dioxide 

Uses of carbon dioxide:

• to put out the fire
• in soft drinks
• storing the beaker
• in soda water
• in greenhouse effect
• to make double roti spongy

The gas released when soda water bottle is opened is

Carbon dioxide

Which gas is in cigarette lighter

Butane

Which gas is used for making vegetable ghee from vegetable oil

Hydrogen

Which gas is used in the balloon

Helium

Who discovered inert gas

Ramsay

Stranger gas is also known as

Xenon

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© 2023, www.mindplan.in

Nitrogen fertilisers

• Urea (CH4N2O / NH2CONH2)
  • Nitrogen (46%)
• Ammonium sulphate ((NH₄)₂SO₄)
  • Ammonia (25%)
• Calcium Nitrate (best nitrogen fertiliser)
  • In the market it is known as Norwegian saltpetre.

Potassium Fertiliser

Phosphorus Fertiliser

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____________ is used in the manufacture of talcum powder.

Theophestus

Prevents ice from melting

Gelatin

The breath test conducted by police to check drunken drivers has which acid on the filter paper?

Potassium dichromate-Sulfuric acid

Incomplete combustion of petrol and diesel produces

Carbon monoxide

The element with the highest electrical conductivity

Silver

Name the poorest conductor of heat

Lead

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© 2023, www.mindplan.in