Linto and Alisa are sharing a pizza. If Linto ate 2/7^th of it, how much did Alisa ate?

Alex went to market to purchase tomatoes. He bought 4.5Kg tomatoes at the rate of $12 per kg. How much did he spent ?

1. $25
2. $45
3. $30
4. $54

The dimensions of room are 8m , 12 m and 10m. Find the lengths of the measuring tape which can measure it in equal parts.

1. 8m
2. 4m
3. 2m
4. 6m

Out of 150 marks, Alisha scored 120. What is her percentage?

1. 15/12 %
2. 125%
3. 5/4 %
4. 80%

“All similar triangles are congruent”

1. True
2. False

Joey scored 75, 80,76,85 and 90 in five subjects out 100 each. Calculate his percentage?

1. 89%
2. 80%
3. 81.2%
4. 80.3%

Find the number by which 7:21 is multiplied to make it equivalent to 84 : 252.

1. 14
2. 12
3. 11
4. 13

the reagents used in the conversion are:

1.    
2.    
3. none of the above    
4.    

Which is the correct order of acidity from weakest to strongest acid for these compounds:
I) CF₃CH₂OH
II)
III)
IV)

1. I<IV<III<II    
2. II<III<I<IV    
3. IV<I<III<II    
4. III<IV<I<II    

Two aliphatic aldehydes P and Q react in the presence of aqueous K₂CO₃ to give compound R, which upon treatment with HCN provides compound S On acidification and heating S gives the product shown below:

The compound P and Q respectively are :

1.  and 
2.  and 
3.  and 
4.  and 

A tertiary alcohol H on acid catalysed dehydration gives a product I. Ozonolysis of I leads to compounds J and K. Compound J upon reaction with KOH gives benzyl alcohol and a compound L, whereas K on reaction with KOH gives only M

The structures of compounds J, K and L, respectively, are:

1. and    
2. and    
3. and    
4. and    

A tertiary alcohol H on acid catalysed dehydration gives a product I. Ozonolysis of I leads to compounds J and K. Compound J upon reaction with KOH gives benzyl alcohol and a compound L, whereas K on reaction with KOH gives only M

The structure of compound I is:

A tertiary alcohol H on acid catalysed dehydration gives a product I. Ozonolysis of I leads to compounds J and K. Compound J upon reaction with KOH gives benzyl alcohol and a compound L, whereas K on reaction with KOH gives only M

Compound H is formed by the reaction of:

1. + PhCH₂MgBr    
2. +PhMgBr    
3. +PhCH₂MgBr    
4.    

Aldehydes undergo disproportionation reaction in presence of aqueous NaOH Simultaneous oxidation and. reduction 'of a compound is scientifically called as disproportionation.
Aldehydes having no a-hydrogen show this reaction called Cannizzaro's reaction. Few exceptions are also there to this generalization.
The reaction may be represented as:

Intramolecular Cannizzaro's reaction is also possible.

Which of the following' compounds gives internal crossed Cannizzaro's reaction?

Aldehydes undergo disproportionation reaction in presence of aqueous NaOH Simultaneous oxidation and. reduction 'of a compound is scientifically called as disproportionation.
Aldehydes having no a-hydrogen show this reaction called Cannizzaro's reaction. Few exceptions are also there to this generalization.
The reaction may be represented as:

Intramolecular Cannizzaro's reaction is also possible.

The aldehyde having -hydrogen which gives Cannizzaro's reaction is:

Aldehydes undergo disproportionation reaction in presence of aqueous NaOH Simultaneous oxidation and. reduction 'of a compound is scientifically called as disproportionation.
Aldehydes having no a-hydrogen show this reaction called Cannizzaro's reaction. Few exceptions are also there to this generalization.
The reaction may be represented as:

Intramolecular Cannizzaro's reaction is also possible.

The aldehyde which shows Cannizzaro's reaction is:

1.    
2. HCHO    
3.    
4. all of these