The incorrect statement about PCl5 among the following is-
1. The hybridization of P in PCl5 is sp3d.
2. PCl5 decomposed and give PCl3 and Cl2.
3. All the five bonds in PCl5 molecule equivalent
4. PCl5 reacts with organic compounds containing –OH group converting them to chloro derivatives.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion: H3PO2 is a reducing agent.
Reason: All oxyacids of phosphorus that have P-H bonds act as strong reducing agents. H3PO2 has two P-H bonds hence, it acts as a strong reducing agent.
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): 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 & Biology