Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Diamond and graphite are allotropes of carbon
Reason : Some elements can have several different structural forms while in the same physical state. These differing forms are called allotropes.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Carbon shows maximum catenation property in the periodic table.
Reason : Carbon has small size and thus, forms a strong C - C bond.
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Carbon monoxide is extremely poisonous in nature.
Reason : Carbon monoxide is formed by complete combustion of carbon.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : CH3Cl is obtained from CH4 by the action of Cl2 in the presence of sunlight.
Reason : It is obtained by an additional reaction.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A): Acetic acid has six single bonds and one double bond.
Reason (R): It is an unsaturated organic compound.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion (A) : Iso-butane is the isomer of C4H10.
Reason (R) : Iso-butane has four C and ten-H atoms.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Cyclopropane is a heterocyclic compound.
Reason : Cyclopropane comes into the category of those compounds in which a complete ring is formed by carbon atoms only.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Carbon has the ability to form long carbon chains.
Reason : Carbon has a unique property of ability to form long straight and branched chains called catenation.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Propene reacts with HBr to give isopropyl bromide.
Reason : Addition of Br2 to alkene places faster in presence of ionising substance.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Carbon compounds can form chain, branched and ring structures.
Reason : Carbon exhibits the property of catenation.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Carbon monoxide is extremely poisonous in nature.
Reason : Carbon monoxide is formed by complete combustion of carbon.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Diamond and graphite are allotropes of carbon.
Reason : Some elements can have several different structural forms while in the same physical state. These forms are called allotropes.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Soap has good cleansing action.
Reason : Soap has a short chain of hydrocarbons. Which acts as hydrophobic and long ionic part which acts as hydrophilic.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Acetic acid is less acidic than alcohol.
Reason : The ion formed after the removal of proton from acetic acid is less stable.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Soaps are not suitable for washing purposes when water is hard.
Reason : Soaps have relatively weak cleansing action.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : C3H8 and C4H10 are the successive members of a homologous series of methane.
Reason : Any two successive members in a homologous series differ in their molecular formula by a — CH3 unit.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Alcohols have similar chemical properties.
Reason : All alcohols contain a similar hydroxy (-0H) functional group.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : The most of carbon compounds are good conductors of electricity.
Reason : They do not dissociate to form ions and remain as molecules.