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Q. No.Which has lowest thermal stability?
1. Li2CO3
2. Na2CO3
3. K2CO3
4. Rb2CO3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn alkali metal that reacts with nitrogen to form nitride is -
1. Li
2. Na
3. Cs
4. None of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCaustic soda is:
1. Efflorescent
2. Deliquescent
3. Hygroscopic
4. Oxidant
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most basic oxide among the following is:
1. Na2O
2. BaO
3. As2O3
4. Al2O3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPearl ash and caustic potash are chemically:
1. K2CO3 and KOH
2. KOH and K2CO3
3. Na2CO3 and KOH
4. Na2CO3 and NaOH
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most dangerous method of precipitating hydrogen would be by the action of HCl on:
1. Zn
2. Fe
3. K
4. Al
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich is industrially prepared by the electrolysis of aqueous NaCl?
1. Na2CO3
2. NaHCO3
3. NaOH
4. NaOCl
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe products of the electrolysis of aqueous solution of common salt are:
1. Na + Cl2
2. H2 + O2
3. NaOH + H2 + Cl2
4. NaOH + Cl2 + O2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySodium cannot be extracted by the electrolysis of brine solution because:
1. sodium leberated reacts with water to produce NaOH+H2
2. sodium being more electropositive than hydrogen, H2 is liberated at cathod and not sodium
3. electrolysis cannot take place with brine solution
4. none of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyKO2 is used in oxygen cylinder in space air craft and submarines because it:
1. absorbs CO2 and increase O2 content
2. eliminate moisture
3. absorbs CO2
4. produces O2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Question Set:
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