EASY

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Why do metals have high melting points?

Important Questions on Atoms Combining

MEDIUM

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

What is thermal conductivity? What is its SI unit?

EASY

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

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

EASY

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

All liquids are poor conductors of heat except _____.

MEDIUM

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

The element which forms ions in dimeric state is

MEDIUM

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

Explain metallic bonding.

EASY

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

SI unit of thermal conductivity.

EASY

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

Malleability and ductility of metals can be accounted due to

EASY

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

Conduction of heat is possible in vacuum.

MEDIUM

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

Represent the union of two sets by Venn diagram for each of the following.

$X = {x | x$ is a prime number between $80$ and $100}$

$Y = {y | y$ is an odd number between $90$ and $100}$

MEDIUM

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

Explain malleability and ductility properties of metals due to metallic bonding.

MEDIUM

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

Two litres of water (density =

1 g {mL}^{- 1}

) in an open lid insulated kettle is heated by an electric heater of power

1 kW

. The heat is lost from the lid at the rate of

160 J s^{- 1}

. The time taken for heating water (Specific heat capacity

4.2 kJ K^{- 1} {kg}^{- 1}

) from

20^{o} C

75^{o} C

MEDIUM

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

Explain the thermal and electrical conducting properties of the metals due to metallic bonding.

EASY

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

In case of an ideal insulator, the thermal conductivity

K

EASY

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

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>Atoms Combining>The Bonding in Metals

For an ideal _____ thermal conductivity is infinite.

MEDIUM

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

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

EASY

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

K =

thermal conductivity, the value of thermal resistivity

MEDIUM

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

Account for high melting and boiling points of metals.

EASY

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

Cotyledons are also called-

EASY

Chemistry>Inorganic Chemistry>Atoms Combining>The Bonding in Metals

The conductivity of the metal decreases with increases in temperature because

Why do metals have high melting points?

Important Questions on Atoms Combining

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