Chemistry MCQs

Industrial chemistry deals with the manufacturing of compounds?

How many numbers of moles are equivalent to 8 grams of CO2?

Molar mass is usually expressed in grams. Which one of the following is molar mass of O2 in amu?

Which one of the following pairs has the same mass?

Which one of the following pairs has the same number of ions?

The molar mass of H2SO4 is?

All of the followings are tri-atomic molecule except?

One amu (atomic mass unit) is equivalent to?

The third abundant gas found in the atmosphere is?

Which one of the following element is found in most abundance in the earth's crust?

The mass of one molecule of water is?

The most abundant element occurring in the oceans is?

Which one of the following can be separated by physical means?

Who discovered the proton?

Theisotope C-12 is present in abundance of?

Deuterium is used to make?

The P subshell has?

When U-235 breaks up, it produces?

Which radioisotope is used for the diagnosis of tumor in the body?

Which one of the following shell consists of three subshells?

The concept of orbit was used by?

Which one of the following is the most penetrating?

Which one of the following results in the discovery of proton?

Point out the incorrect statement about electron affinity?

Mark the incorrect statement about ionization energy?

Transition elements are?

Along the period, which one of the following decreases?

Which one of the following halogen has lowest electronegativity? 

Long form of Periodic Table is constructed on the basis of?

The atomic radii of the elements in Periodic Table?

Mendeleev Periodic Table was based upon the?

The amount of energy given out when an electron is added to an atom is called?

4th and 5th period of the long form of Periodic Table are called?

Which one of the following is the weakest force among the atoms?

Identify which pair has polar covalent bonds?

Which one of the following is an electron deficient molecule?

Identify the compound which is not soluble in water?

Which pair of the molecules has same type of covalent bonds?

Triple covalent bond involves how many number of electrons?

How many covalent bonds does C2H2 molecule have?

Covalent bond involves the ?

Ice floats on water because?

Which of the following compounds is not directional in its bonding?

Transfer of electrons between atoms results in?

When an electronegative element combines with electropositive clement the type of bonding is?

A bond formed between two non-metals is expected to be?

A bond pair in covalent molecules usually has?

Octet rule is ?

Considering the electronic configuration of atoms which atom with the given atomic number will be the most stable one?

An atom having six electrons in its valence shell will achieve noble gas electronic configuration by?

Atoms react with each other because?

The vapour pressure of a liquid increases with the?

Density of a gas increases, when its?

Which one of the following does not affect the boiling point?

Which one of the following gas diffuses faster?

In the evaporation process, liquid molecules which leave the surface of the liquid have?

One atmospheric pressure is equal to how many Pascals?

Which one of the following is not amorphous?

Solid particles possess which one of the following motions?

At freezing point which one of the following coexists in dynamic equilibrium?

Gases are the lightest form of matter and their densities are expressed in terms of?

How many times liquids are denser than gases?

Molarity is the number of moles of solute dissolved in?

When a saturated solution is diluted it turns into?

if 10 cm3 of alcohol is dissolved in 100 g of water, it is called?

Tyndall effect is due to?

Tyndall effect is shown by ?

Which one of the following is heterogencous mixture?

Which one of the following will show negligible effect of temperature on its solubility?

If the solute-solute forces are strong enough than those of solute-solvent forces. The solute?

AS percent (w/w) sugar solution means that?

Which one of the following solutions contains more water?

Concentration is ratio of?

Which one of the following is a 'liquid in solid" solution?

Mistis an example of solution?

In the redox reaction between Zn and HCI, the oxidizing agent is?

The formula of rust is?

During the formation of water from hydrogen and oxygen, which of the following does not occur?

Nelson's cell is used to prepare caustic soda along with gases. Which of the following gas is produced at cathode?

The most common example of corrosion is?

Which one of the following is not an electrolyte?

The oxidation number of chromium in K2Cr2O7 is?

Which one of the following is not an electrolytic cell?

Formation of water from hydrogen and oxygen is?

Spontancous chemical reactions take place in?

Which one of the following will not react with dilute HC1?

Non-metalsare generally soft, but which one of the following is extremely hard?

Which one of the following non-metal is lustrous?

Which one of the following is brittle?

Metals lose their electrons easily because?

Which of the following is less malleable?

Pure alkali metals can be cut simply by knife but iron cannot because of alkali metals have?

Which one the following is the lightest and floats on water?

Sodium is extremely reactive metal, but it does not react with?

Which one of the following metals burn with brick red flame when heated in air?

Metals can form ions carrying charges?