Q. No.The correct order of hydrogen bonding among , H2O and HF, is
1. HF > >
2. > HF >
3. HF > >
4. > HF >
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe term ’auto-protolysis’ of water means :
| 1. | Physical reaction in which two water molecules react to produce a hydroxide ion (OH–) and a hydronium ion (). |
| 2. | Chemical reaction in which five water molecules react to produce a hydroxide ion (OH–) and a hydronium ion (). |
| 3. | Chemical reaction in which two water molecules react to produce a hydroxide ion (OH–) and a hydronium ion (). |
| 4. | Chemical reaction in which two water molecules react to produce three hydroxide ions (OH–) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct statement about the reaction of water with fluorine is:
| 1. | O is reduced from 0 to -1 oxidation state, whereas F is oxidized from –2 to 0 |
| 2. | F is reduced from 0 to -1 oxidation state, whereas O is oxidized from –2 to 0 |
| 3. | F is reduced from 0 to –2 oxidation state, whereas O is oxidized from – 2 to -1 |
| 4. | O is reduced from 0 to –2 oxidation state, whereas F is oxidized from –3 to 0 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe structure of the common form of ice is :
| 1. | Each hydrogen atom is surrounded tetrahedrally by four other oxygen atoms at a distance of 540 pm. |
| 2. | Each hydrogen atom is surrounded tetrahedrally by four other oxygen atoms at a distance of 276 pm. |
| 3. | Each oxygen atom is surrounded tetrahedrally by four other oxygen atoms at a distance of 276 pm. |
| 4. | Each oxygen atom is surrounded tetrahedrally by four other oxygen atoms at a distance of 540 pm. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWater acts as a base in -
1. Reaction with
2. Reaction with
3. Reaction with NaOH
4. All of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology‘Demineralised’ water can be obtained by :
| 1. | Passing water successively through an anion exchange (in the K+ form) and cation exchange (in the Mn- form) resin |
| 2. | Passing water successively through a cation exchange (in the H+ form) and an anion exchange (in the OH- form) resin |
| 3. | Passing water successively through an anion exchange (in the O+ form) and cation exchange (in the OH- form) resin |
| 4. | Passing water successively through a cation exchange (in the OH- form) and an anion exchange (in the H+ form) resin |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDemineralized or distilled water is not useful for drinking purposes because -
1. Demineralised water contains all insoluble minerals.
2. Demineralised water is free of all soluble minerals.
3. Demineralised water contains soluble minerals.
4. Demineralised water contains soluble anion only.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWater is important in the biosphere and biological systems because :
| 1. | It constitutes around 65% of the human body and 95% of plants |
| 2. | It acts as a carrier of various nutrients required by plants and animals for various metabolic reactions. |
| 3. | The high heat of vaporization and heat of capacity of water helps in moderating the climate and body temperature of all living beings |
| 4. | All of the above. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe properties of water which make it useful as a solvent is/are -
1. A high value of dielectric constant
2. A high value of dipole moment
3. A high value of lattice energy
4. Both '1' and '2'
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyD2O cannot be used for drinking purposes, because -
1. it increases the rate of catabolic reactions
2. it slows the rate of anabolic and catabolic reactions
3. it slows the rate of anabolic reactions.
4. it increases the rate of a reaction.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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