- Jabir Bin Hayyan
- Al-Razi
- Al-Khawarzmi
- None of these
- A
-
Hydrochloric Acid is also known as Muriatic Acid.
Jibir Bin Hayyan discovered Hydrochloric Acid in 800 AD.
Chemical Formula of Hydrochloric Acid is HCl.
Sulfuric Acid also discovered by Jibir Bin Hayyan.
Chemical Formula of Sulfuric Acid is H2SO4.
Chemistry MCQs
All Chemistry MCQs are included in this section of ETEST Academy’s Website. All Chemistry MCQs are completely solved with detailed answers. All Chemistry MCQs are taken from different Current & Past Papers. Our team updates ETEST Website on daily basis.
Which of the following involve in bread and vinegar formation?
- Viruses
- Algac
- Fungi
- Microbes
- D
-
The bacteria Acetobacter Aceti is evolved in formation of Vinegar and Bread.
This bacteria has ability to convert Ethanol to Acetic Acid.
This bacteria was discovered in 1864.
This is also used in formation of wine and beer.
All those reactions which take place in heat energy are known as:
- Exothermic reactions
- Combustion reactions
- Endothermic reactions
- Incineration reaction
- A
-
Exothermic is a chemical reaction that release energy in form of light and heat.
Burning or Candles, Rusting of Iron, Reaction of Water and Acid, Making of Ice cube, Burning of Sugar are examples of Exothermic Reaction.
When acid and alkali are mixed, they produce salt this process is known as:
- Acidification
- Neutralization
- Ammonification
- Nitrification
- B
Naturally tannic acid is present in:
- Sour Milk
- Vinegar
- Tea
- Soya Sauce
- C
-
Tannic is a weak acid.
Tannic Acid is found in deferent fruits, vegetables, nuts and tea.
Which of the following area around the equator receives the more heat from the sun?
- Arctic
- Polar
- Temperature
- Tropical
- B
Biometric strip is made up of:
- Silver and Iron
- Iron and Steel
- Copper and Brass
- Aluminum and Steel
- C
-
Biometric strip is made up ot Steel and Copper.
Biometric strip is made up of Steel and Brass.
Biometric strip is made up of Copper and Brass.
Which of the following salts is used in plaster of Paris?
- Ammonium Chloride
- Calcium Sulfate
- Sodium Chloride
- Potassium Nitrate
- B
-
Calcium Sulfate is chemical name of Plaster of Paris.
Plaster of Paris is synthesized from gypsum.
Gypsum is heated at 373K to get Calcium Sulfate.
The scale of temperature is made by using two easily obtained temperature called:
- Stable Point
- Fixed Point
- Fixed Point
- Motionless Point
- A
A solution having 3 pH is known as:
- Weak Acid
- Strong Base
- Strong Acid
- Weak Base
- A
-
A solution that have pH greater than 7 is called strong Acid.
A substance that have 3 pH is called strong Base.
