Explore topic-wise MCQs in Chemistry.

Which of the following processes is used to remove reducible oxides from the metal?

Leakage of which of the following gases caused the Bhopal gas tragedy ?

Formation of anions occurs by

A bond formed by the transfer of electrons betwwen atoms of the elements is called

The law of constant proportions was enunciated by

Species containing same number of electrons are called

Ethanol is converted into ethoxy ethane,

ATP stands for -

The number of neutrons in dipositive Zinc ion is

A pure substance can only be

Which one of the following can be used to confirm wether drinking water contains a gamma emitting isotope or not

Recycled plant matter is known as ?

TEL minimise the knocking effect when mixed with petrol, it acts as_______

Chloroform used as anaesthetic should be preserved in the dark in tightly stoppered bottles because otherwise

Which of the following acts both as oxidising and reducing agent?

Silver Mirror test is given by which one of the following compounds?

Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to

Positive ions are formed from neutral atoms by loss of

The first indication that a stable nucleus can be broken down was afforded by

Blue litmus paper is converted into red in solution of _______

Formation of cation occurs by

A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at :

The charge on positron is equal to the charge on

The maximum number of hydrogen bonds in a water molecule is...........

An element which is preserved under water is

Which of the following is a radioactive element

Which one of the following is used to induce artificial rain ?

Neutron was discovered by

Triple point of water corresponds to

The particle with 13 protons and 10 electrons is

Standard Electrode potential is measured in terms of

Cathode rays have

The presence or absence of hydroxy group on which carbon atom of sugar differentiates RNA and DNA ?

Which of the following carbon compounds is used as a fire- extinguisher?

Which among the following is the most electronegative element?

One method by which the components of air can be seperated is

Leakage in LP gas cylinders is easily detected by adding

The substances that are composed of to or more different elements in fixed proportion by mass are called

Trichloroacetaldehyde was subject to Cannizzaro's reaction by using NaOH. The mixture of the products contains sodium trichloroacetate andanother compound. The other compound is :

Which of the following does not contain the material particles

Which of the properties of the element is a whole number

Which of the following is a non metal that remains liquid at room temperature ?

According to the modern Periodic Law, the properties of elements are periodic functions of their

The electrochemical cell stops working after some time because ________

Which gas is known as "Fuel of Future" ?

Wavelength of which of the following colours of the visible spectrum of light are maximally absorbed by green plants________

Which one of the following substances does not have a melting point

All of the following are constituents of RNA molecule except _____

Water always contains hydrogen and oxygen in the ratio 1:8 by weight.This is in accordance with the

A particle which is four times in mass and two times in charge that of proton is