What is mean by metallic lustre?

Important Questions on Chemical Bonding and Molecular Structure

MEDIUM

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

What is thermal conductivity? What is its SI unit?

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

State whether the following statement is true or false:
“The constituent particles of a material change position during conduction of heat through it.”

MEDIUM

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

Which of the following does not apply to bonding in metals ?

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

The high melting of the metals is due to _____.

MEDIUM

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

The metallic bond is present in _____

MEDIUM

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

The element which forms ions in dimeric state is

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

The melting point and the volatility of the metals are _____ proportional.

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

Two rods of equal lengths and areas of cross-section are kept parallel and hanged between temperatures 20$℃$ and 80$℃$. The ratio of the effective thermal conductivity to that of the first rod is (the ratio=$\frac{K_1}{K_2}$ =$\frac{3}{4}$ )

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

All liquids are poor conductors of heat except _____.

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

The force that holds atoms together in a metallic substance is called as _____.

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

The high melting point of the metals is due to the strong _____.

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

The metallic bonding is formed due to the presence of free _____.

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

The conductivity of the metal decreases with increases in temperature because

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

Lustre is a physical property of a metal which occurs due to the _____ of photons.

MEDIUM

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

Two litres of water (density = $1 \mathrm{g} {\mathrm{mL}}^{-1}$) in an open lid insulated kettle is heated by an electric heater of power $1 \mathrm{kW}$. The heat is lost from the lid at the rate of $160 \mathrm{J} {\mathrm{s}}^{-1}$. The time taken for heating water (Specific heat capacity$4.2 \mathrm{kJ} {\mathrm{K}}^{-1} {\mathrm{kg}}^{-1}$) from ${20}^{\mathrm{o}}\mathrm{C}$to ${75}^{\mathrm{o}}\mathrm{C}$ is

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

Malleability refers to the property of metals by which they can be beaten into _____.

MEDIUM

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

Which of the following is/are observed in metallic bonds?

 

 

MEDIUM

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

Metallic bond is formed by the sharing of free electrons among a structure of _____.

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

For an ideal _____ thermal conductivity is infinite.

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Metallic Bond

The metals are forming strong bond due to _____.