Assertion(A): Elements of Group 16 generally show lower value of first ionisation enthalpy compared to the corresponding periods of group 15.
Reason(R): Elements of Group 16 is more electronegative than elements of Group 15.
1. Both assertion and reason are true, and reason is the correct explanation of the assertion.
2. Both assertion and reason are true, but reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Assertion is false but reason is true.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion(A): H2S is less acidic than H2Te.
Reason(R): The bond (E–H) dissociation enthalpy decreases down the group in Group 16 hydrides.
The correct option is-
1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true and R is not the correct explanation of A
3. A is true but R is false
4. A is false but R is true
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion(A): Sulphur shows paramagnetic behaviour.
Reason(R): S2 does not contain unpaired electron.
The correct option is-
1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true and R is not the correct explanation of A
3. A is true but R is false
4. A is false but R is true
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHalogens have maximum negative electron gain enthalpy in the respective periods of the periodic table because-
1. It has smallest size and high effective nuclear charge
2. It has the largest size in in the respective periods
3. It is a strong reducing agent
4. None of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion(A): Although electron gain enthalpy of fluorine is less negative as compared to chlorine, fluorine is a stronger oxidising agent than chlorine.
Reason(R): F2 has low enthalpy of dissociation and F– has high hydration enthalpy
The correct option is-
1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true and R is not the correct explanation of A
3. A is true but R is false
4. A is false but R is true
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion(A): Fluorine exhibits only –1 oxidation state whereas other halogens exhibit + 1, + 3, + 5 and + 7 oxidation states.
Reason(R): Other halogens have d orbitals and therefore, can expand their octets and show +1, +3, +5 and +7 oxidation states also.
1. Both assertion and reason are true and reason is the correct explanation of the assertion.
2. Both assertion and reason are true but reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Assertion is false but reason is true.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe incorrect statement among the following is-
1. Cl2 reaction with hot and concentrated NaOH produces NaCl andNaClO3.
2. Cl2 reaction with hot and concentrated NaOH produces NaCl and NaOCl.
3. It is an example of disproportionation reaction.
4. Chlorine from zero oxidation state is changed to –1 and +5 oxidation states.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHCl reacts with finely powdered iron, it forms ferrous chloride and not ferric chloride because-
1. Formation of Cl2 gas prevent ferric chloride formation
2. Formation of H2 gas prevent ferric chloride formation
3. Formation of [FeCl6]4- prevent ferric chloride formation
4. Formation of Fe3H prevent ferric chloride formation
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion(A): The elements of Group 18 are known as noble gases.
Reason(R): Group 18 elements are highly reactive.
The correct option is-
1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true and R is not the correct explanation of A
3. A is true but R is false
4. A is false but R is true
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology