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Which fuel has the highest calorific value

Which fuel has the highest calorific value? Petrol Wood Hydrogen gas Methane The correct option is iii. Hydrogen gas... View Article

All metals are solid except?

All metals are solid, except? Mercury Calcium Hydrogen Sodium The correct option is i. Mercury... View Article

Define metallic and non metallic character

The metallic character is the tendency of an element to lose electrons and form positive ions or cations. Alkali metals are the most... View Article

What change occurs when Agcl is doped with CdCl2

When AgCl is doped with CdCl2 a cationic vacancy is generated.... View Article

The radius of the second bohr orbit for hydrogen atom

The radius of the second Bohr orbit for a hydrogen atom is? Given that the Planck's constant is 6.6262 x 10-34 Js, mass... View Article

Explain the difference between the thermoplastic and thermosetting plastics

The following table is an explanation of difference between thermoplastics and thermosetting plastics: Thermoplastics Thermosetting... View Article

High elastic modulus in materials arises due to (a) High strength of bonds (b) Weak bonds (c) combination of bonds (d) None

Option (a) High strength of bonds.... View Article

The liquid which has the highest rate of evaporation is: a) Petrol b) honey c) Water d) Alcohol

Option a) Petrol... View Article

Among the following electron deficient compound is

Among the following, electron deficient compound is: CCl4 PCl5 SiF4... View Article

Lipids are insoluble in water because they are

Lipids are insoluble in water because they are: Neutral Zwitter ions Hydrophobic Hydrophilic The correct option is iii. Hydrophobic... View Article

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 meniscus in the inclined tube.... View Article

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.... View Article

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 an empty orbital, so it can accept a pair of... 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 anion. This is used in the... View Article

Give one example of an exothermic reaction and one of an endothermic reaction

The following is an example of exothermic reaction: C+O2→CO2+Heat The following is an... View Article

Chemical formula of bleaching powder is

The chemical formula of bleaching powder is Ca(ClO)2... View Article

Terylene is a

Terylene is a? Polyether Polymide Polyester Long chain hydrocarbon The correct option is iii. Polyester... View Article

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 condensation.... View Article

What is the nature of baking soda?

The nature of baking soda is basic.... View Article

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 an electropositive... View Article

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