Which metal bicarbonates does not exist in solid state?

(i) LiHCO3       (ii) CaHCO32     (iii) ZnHCO32      (iv)AgHCO3

(1) i,ii,iii,iv                           

(2) i,ii,iii

(3) i,ii,iv                               

(4) ii,iii,iv

Subtopic:  Physical Properties |
 52%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The incorrect statement among the following is-

1. The milk of magnesia used as an antacid is chemically MgO + MgCl2

2. Stability of alkali metal peroxides increases with an increase in atomic number.

3. Hydration energy of AgF is higher than its lattice energy.

4. Anhydrous MgCl2 cannot be prepared by direct heating of MgCl2 . 6H2O

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Calcium imide on hydrolysis gives gas (B) which on oxidation by bleaching powder gives gas (C). Gas (C) on reaction with magnesium give compound (D) which on hydrolysis gives again gas (B)> Identify (B), (C) and (D).

(1) NH3, N2, Mg3N2 

(2) N2, NH3, MgNH

(3) N2, N2O5, MgNO32 

(4)NH3 ,NO2, MgNO22 

Subtopic:  Chemical Properties |
 56%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which of the following order is correct?

1. K+<Ca2+<p3-<S2-: Ionic size

2. Naaq.+>Kaq.+>Rbaq.+>Csaq.+: Electrical conductance

3. Alaq.3+>Mgaq.2+>Naaq.+: Hydrated size

4. Iaq.-<Braq.-<Claq.-<Faq.-: Ionic mobility

Subtopic:  Physical Properties |
 59%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Compound having lowest melting point:

(1) LiCl                               

(2) CsCl

(3) RbCl                               

(4) KCl

Subtopic:  Physical Properties |
 53%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Give the correct order of initials T or F for following statements. Use T if statement is true and F if it is false.

(I) Numbers of SS bonds in H2SnO6 are (n+1)
(II) When F2 reacts with water gives HF, O2 and O3
(III) LiNO3 and BaCl2 compounds are used in fire works 
(IV) Be and Mg are ionic and polymeric

(a)FTTF                (b) FTTT              (c) TFTT                 (d) TTFF

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 50%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following statements is true for all the alkali metals?

(1) Their nitrate decomposes on heating to give the corresponding nitrites and oxygen.

(2) Their chlorides are deliquescent and crystallize as hydrates.

(3) They react with water to form hydroxide and hydrogen.

(4) They readily react with halogens to form ionic halides. M+X-.

Subtopic:  Preparations, Properties & Uses of S Block Elements |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following statements is not true about the dilute solutions of alkali metals in liquid ammonia?

1. They are deep blue coloured solutions.

2. They are highly conducting in nature.

3. They are diamagnetic in nature.

4. Ammoniated cations and ammoniated anions are formed in a solution.

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 77%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Which is not correctly matched?

(1) Basic strength of oxides                                 Cs2O<Rb2O<K2O<Na2O<LiO2

(2) Stability of peroxides                                      Na2O <K2O2<Rb2O2<Cs2O2

(3) Stability of bicarbonate                                   LiHCO3<NaHCO3<KHCO3<RbHCO3<Cs HCO3

(4) Melting Point                                                  NaF<NaCl<NaBr<Nal

 

(A) 1 and 4                                           

(B) 1 and 3

(C) 1 and 2                                           

(D) 2 and 3

Subtopic:  Chemical Properties |
 65%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

In manufacture of sodium carbonate from Solvay (or ammonia-soda) process the raw material used is :

(1) NaOH                                             

(2) Na2SO4

(3) NaCl                                               

(4) NaHCO3

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 61%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh