Alcohol is used in manometer because
Alcohol is used in manometer because it provides a longer column due to low density. It also provides a suitable... View Article
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Milk is a mixture. Give reasons.
Milk is a colloidal mixture that contains water, fats, proteins. Lactose and casein are the main compounds of milk.
Why does bf3 act as a lewis acid
A Lewis acid can accept a pair of electrons from a Lewis base. BF3 is deficient of electrons and has... View Article
What is calgon process in chemistry?
Calgon’s process is used in chemistry to get complex anion. Calgon is used for ionizing in order to get complex... View Article
Give one example of an exothermic reaction and one of an endothermic reaction
The following is an example of exothermic reaction: C+O<sub>2</sub>→CO<sub>2</sub>+Heat The following is an example of endothermic reaction: N<sub>2</sub>+O<sub>2</sub>+Heat→2NO
Chemical formula of bleaching powder is
The chemical formula of bleaching powder is Ca(ClO)<sub>2</sub>
Terylene is a
Terylene is a? Polyether Polymide Polyester Long chain hydrocarbon The correct option is iii. Polyester
Liquid to gas and gas to liquid changes are called
The conversion of liquid to gas is known as evaporation and the conversion of gas to liquid is known as... View Article
What is the nature of baking soda?
The nature of baking soda is basic.
State three reasons that magnesium is a metal
The following are the three reasons that makes magnesium a metal: It is a good conductor of electricity. Magnesium is... View Article
Hyperconjugation involves overlap of which of the following orbitals a) σ−σ b) σ−p c) p−p d) π−π
Option b) σ−p
Convert Propene to propan-1-ol
Properne to Take propene and add hydrogen bromide in the presence of peroxide. Add an aqueous solution of... View Article
Which of the following pairs are isotopes a) Ice and steam b) Hydrogen and Deuterium c) Nitric oxide and nitrogen dioxide d) Oxygen and ozone
Option b) Hydrogen and Deuterium
Which metals does not react with dilute hydrochloric acid
Metals that do not react with dilute hydrochloric acid are copper, silver, gold and mercury.
A reaction is 50 complete in 2 hours and 75 complete in 4 hours the order of reaction is? a)0 b)1 c)2 d)3
Option b) 1
When coal burns in air ……….. gas is mainly produced (a)SO2 (b)NO2 (c)CO (d)CO2
Option (d)CO2
Air is a mixture but not a compound. Explain why
Air is a mixture, but not a compound because air can be separated into different components such oxygen, nitrogen etc... View Article
Tomato juice is acidic or basic
Tomato juice is acidic in nature.
Which of the following is not a chemical change?
Which of the following is not a chemical change? burning of paper rusting of iron digestion of food precipitation of... View Article
NaHCO3 on heating gives
The following is the reaction that takes place when NaHCO<sub>3</sub> is heated: NaHCO<sub>3</sub>→Na<sub>2</sub>CO<sub>3</sub>+CO<sub>2</sub>+H<sub>2</sub>O
