when radiation with certain minimum frequency strike the surface of metal then the electrons are ejected from the surface of metal this phenomenon is called

Atom/molecule/ions containing same number of electrons

Number of period in modern periodic table

For Ionic compound electronegativity is greater then

At a particular temperature is one that is more concentrated than its saturated solution at that temperature

Temporary hardness is removed by

When spectral lines obtained from atomic spectra are placed in a electric field they are splitted into number of fine lines called

A solution that cannot dissolve any more of the solute at a given temperature

Radiant energy is emmited or absorbed in the form of small energy packets called

The components which is in higher proportion solution is called

Sum of oxidation number of atom in a molecule is

James clark Maxwell stated that X-ray , Y-ray , heat etc Emmit energy continuously in the form of radiations or waves and the energy is called

Hydrogen have how many isotopes

Amount of energy released during formation of one mole of Ionic compound from its constitutent ions

It is a special type of covalent bond in which one atom donates electron to other atom , the bonding between donor to acceptor is

what is used as a moderator in nuclear reactor

The components which is in smaller proportion or less amount in solution is called

Osmosis takes place from

which of the following is used as hair bleach

A solution in which more of the solute can be dissolved at a given temperature is known as

The reaction in which both oxidation and reduction takes place

S-block contain

Process of direct conversion of vapor into solid is

Average equilibrium distance between centre of two bonded atoms is called

To reduce knocking property of fuel certain chemical is added in it these are called

oxidation number in free state is

when did James clark Maxwell discovered radiant energy

when temperature is increased the the solubility of substance

how many non metal are there in periodic table

It is the percentage of cetane by volume in a mixture of cetane and a methyl napthalene

It is a heterogeneous solution in which size of solute particles is less then 10⁶m

who classified element into metal and non metal

Amount of energy required to break one mole bond of particular type between atoms in gaseous state of substance is called

Si unit of frequency is

When hydrogen atom is present between two most electronegative atoms then it is bonded to one by covalent bond other by a weak force of attraction which is called

sodium sulfate decahydrate solubility

Number of wave passing through a point in one second is called

It is the solution in which amount of solute present is rather small compared to the mass of solvent

Fluroscent tube and CFL bulbs contain

For polar covalent compound electronegativity is less than

How many Groups are there in modern periodic table

If hydration energy is greater than Lattice energy then the compound is

Oxidation number of alkali metal is

modern periodic Law was given by

which group comes under S-block

Permanent hardness is removed by

double positively charged He++ is called

In diffusion what flows

Phenomenon of moving of two or more atomic orbitals of equivalent energies to form new type of identical number of orbitals is called

waves associated with electric as well as magnetic field is known as

When spectral lines are obtained from atomic spectra are placed in a magnetic field and they are splitted into number of fine lines this is called

Plank's quantum theory on radiation is given on

what states that mass of a gas dissolved in a given volume of a liquid at constant temperature is directly proportional to the pressure of gas present in equilibrium with liquid

In this reaction one or more atoms or group present in organic molecule gets substituted or replaced by suitable atoms or groups

which element has all three types of bond

The spontaneous flow of the solvent molecules from the solvent to the solution or from less concentrated solution through a semi-permeable membrane is called

It is a homogeneous solution in which size of solute particles is less then 10-⁹m

Electron affinity decreases from

Presence of what makes CFLs glow

oxidation number of alkaline earth metal is

Bond formed by sidewise or lateral overlapping of atomic orbitals is called

seven color band is called

electronegativity increases from

It is the only element in periodic table having zero neutron

Bond formed by linear overlapping of atomic orbitals is known as

effect of pressure on solubility of a gas in liquid was studied by Henry in

when solution is composed of only two components is called

when covalent bond is formed between different atoms of an element is known as

Electron affinity increases from

effect of pressure on solubility of a gas in liquid was studied by

Flash point of india is fixed at

The amount of energy released during dissolution of one mole of compound into water is called

set of four intrgers required to define an electron completely in an atom is called

For non-polar covalent compound electronegativity is

what is radioactive isotopes of hydrogen

In osmosis there is only flow of

when hydrogen bonding occur within molecule then it is called

It is a membrane which allows only the movement of solvent molecules through them ex bladder of goat or pig

Total groups in periodic table in newland table

First rare metal is

when a helium atom looses two electron it become a positively charged

Which of the following is not the isotopes of hydrogen

Distance between two consecutive Crest or trough is called

This bond arises when hydrogen bonding occur between two or more molecules

Atomic mass is the number which state that how many times the mass of one atom of an element is what part heavier than one atom of carbon 12

Hydrogen is used as antiseptic under the name of

Effect of temperature on solubility of Gas

The maximum amount of solute in gram which can be dissolved in 100gm of solvent to form saturated solution at particular temperature is called

Chemical reaction in which one substance gets oxidised as well as reduced is known as

Total period in periodic table in newland table

The lowest temperature at which an oil gives sufficient vapour to form an explosive mixture with air is known as

A series is obtained by arranging the metals in decreasing order of reactivity which is known as

Those properties of ideal solution which depends only on the number of particles of the solute dissolved in a definite amount of the solvent are called

wavelength is denoted by

size of true solution is less than

which element has lower ionization potential

when covalent bond is formed between two similar atoms of an element is called

number of wavelength which can be accomodated in one cm length along the direction of propogation is called

electronegativity decrease from

Diffusion takes place from