MEDIUM
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This is Assertion-Reason type question. This question contains two statements. Statement - 1 (Assertion) and Statement - 2 (Reason). This question also has four alternative choices, only one of which is the correct answer. You have to select the correct choice.

Assertion: Diamond is thermally more stable than graphite.

Reason: In diamond unit cell is like of zinc blende.

50% studentsanswered this correctly

Important Questions on Chemical Bonding and Molecular Structure

EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Draw the electron dot structure of Nitrogen. [N=7]
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
What is a polar molecule? Give an example.
HARD
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

Draw the electron dot diagram for the compound given below. Represent the electrons by (.) and (x) in the diagram.

  • Chlorine molecule [Atomic No.Cl=17]
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Identify the correct electron dot structure of nitrogen molecule in the following:
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The total number of dative bonds present in all the following CO, NH4Cl, Al2Cl6, AlH2O6, HNO3 and CO2 is
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Explain how a single covalent bond is formed between two atoms of hydrogen. (Support your answer by drawing a structural diagram).
HARD
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

Give one word or a phrase for the following statement:

  • The chemical bond formed by a shared pair of electrons each bonding atom contributing one electron to the pair.
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Ethane with the molecular formula C2H6 has
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The sum of the number of dative bonds present in all the given species are; Al2Cl6, AlH2O6, CO, NH4+
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
What do you understand by a lone pair of electrons?
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Give one example each of a liquid and a solid covalent bond.
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Nitrogen shows maximum covalency of 4 where as other heavier elements of the group show higher covalency because.
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The number of covalent bonds present in pentane are
HARD
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Why are covalent compounds are generally poor conductors of electricity?
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Propane has
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Which one of the following compounds is not an ionic compound?
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Ethane, with the molecular formula C2H6 has
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
A compound with a low boiling point is:
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The number of co-ordination bonded water molecules associated with CuSO4.5H2O is _______
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
What is the nature of the bond between B and O in C2H52OBH3 ?