In the following reaction, X and Y respectively are

1.  CH3OH, C2H5OH

2.  CH3CHO, CH3OH

3.  CH2=CH2,CH3COOH

4.  CH3COOH, C2H5OH

View Answer  
4
Correct Answer :

CH<sub>3</sub>COOH, C<sub>2</sub>H<sub>5</sub>OH


Explanation :
No Explanation available for this question

At 270C, a Closed vessel contains a mixture of equal weights of helium {mol. wt. = 4), methane (mol. wt. =16) and sulphur dioxide (mol. wt. = 64). The pressure exerted by the mixture is 210 mm. If the pa

1.  P3 > P2 > P1

2.  P1 > P2 > P3

3.  P1 > P3 > P2

4.  P2 > P3 > P1

View Answer  
4
Correct Answer :

P<sub>1</sub> &gt; P<sub>2</sub> &gt; P<sub>3</sub>


Explanation :
No Explanation available for this question

The compound formed when gypsum is dissolved in aqueous ammonium sulphate solution is

1.  CaSO4. NH4Cl.H2O

2.  CaCl2. (NH4)2SO4. H2O

3.  CaSO4. (NH4)2SO4. H2O

4.  CaCl2. NH4Cl.2H2O

View Answer  
4
Correct Answer :

CaSO<sub>4</sub>. (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>. H<sub>2</sub>O


Explanation :
No Explanation available for this question

In the following reaction, A and B respectively are :

1.  C2H4 and alcoholic KOH / Δ

2.  C2H5Cl and aqueous KOH / Δ

3.  C2H5OH and aqueous KOH / Δ

4.  C2H2 and PBr3

View Answer  
4
Correct Answer :

C<sub>2</sub>H<sub>4</sub> and alcoholic KOH / &#916;


Explanation :
No Explanation available for this question

0.066 grams of metal was deposited when a current of 2 ampere is passed through a metal ion solution for 100 seconds. What is the electrochemical equivalent (in gram coulomb -1) of the metal

1.  3.3 x 10-6

2.  3.3 x 10-4

3.  0.033

4.  3.3

View Answer  
4
Correct Answer :

3.3 x 10<sup>-4</sup>


Explanation :
No Explanation available for this question

What is the hybridization state of the central atom in the conjugate base of NH+4 ion

1.  sp

2.  sp3

3.  sp2

4.  dsp2

View Answer  
4
Correct Answer :

sp<sup>3</sup>


Explanation :
No Explanation available for this question

10 grams of a radioactive element is disintegrated to 1 gram in 2.303 minutes. What is the half-life (in minutes) of that radioactive element

1.  1/0.693

2.  6.93

3.  1

4.  0.693

View Answer  
4
Correct Answer :

0.693


Explanation :
No Explanation available for this question

Iron sulphide is heated in air to form A, an oxide of sulphur. A is dissolved in water to give an acid. The basicity of this acid is

1.  2

2.  3

3.  1

4.  Zero

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

The reaction conditions used for converting 1, 2 - dibromo ethane to ethylene are

1.  Zn, alcohol, Δ

2.  KOH, alcohol, Δ

3.  KOH, water, Δ

4.  Na, alcohol, Δ

View Answer  
4
Correct Answer :

Zn, alcohol, &#916;


Explanation :
No Explanation available for this question

Calculate the heat of combustion (in kJ) of methane from the following data(i) C (graphite) + 2H2 (g) → CH4 (g)    

1.  - 891.1

2.  - 816.3

3.  - 965.9

4.  -1040.7

View Answer  
4
Correct Answer :

- 891.1


Explanation :
No Explanation available for this question
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