Maths-
General
Easy
Question
Linto and Alisa are sharing a pizza. If Linto ate 2/7th of it, how much did Alisa ate?
- 1/7
- 3/7
- 4/7
- 5/7
The correct answer is: 5/7
Part eaten by Linto = 2/7
Whole Pizza = 1 = 7/7
Part eaten by Alisa = 1-2/7 = 7/7 – 2/7 = 5/7
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Alex went to market to purchase tomatoes. He bought 4.5Kg tomatoes at the rate of $12 per kg. How much did he spent ?
- $25
- $45
- $30
- $54
Alex went to market to purchase tomatoes. He bought 4.5Kg tomatoes at the rate of $12 per kg. How much did he spent ?
Maths-General
- $25
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The dimensions of room are 8m , 12 m and 10m. Find the lengths of the measuring tape which can measure it in equal parts.
- 8m
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- 15/12 %
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Maths-General
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Joey scored 75, 80,76,85 and 90 in five subjects out 100 each. Calculate his percentage?
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Find the number by which 7:21 is multiplied to make it equivalent to 84 : 252.
- 14
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- 11
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Find the number by which 7:21 is multiplied to make it equivalent to 84 : 252.
Maths-General
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Chemistry-
the reagents used in the conversion are:
- none of the above
the reagents used in the conversion are:
Chemistry-General
- none of the above
Chemistry-
Which is the correct order of acidity from weakest to strongest acid for these compounds:
I) CF3CH2OH
II) 
III) 
IV) 
- I<IV<III<II
- II<III<I<IV
- IV<I<III<II
- III<IV<I<II
Which is the correct order of acidity from weakest to strongest acid for these compounds:
I) CF3CH2OH
II) 
III) 
IV) 
Chemistry-General
- I<IV<III<II
- II<III<I<IV
- IV<I<III<II
- III<IV<I<II
Chemistry-
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 :
and
and
and
and
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 :
Chemistry-General
and
and
and
and
Chemistry-
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:
and
and
and
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:
Chemistry-General
and
and
and
and
Chemistry-
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

The structure of compound I is:
Chemistry-General
Chemistry-
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:
+ PhCH2MgBr
+PhMgBr
+PhCH2MgBr
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:
Chemistry-General
+ PhCH2MgBr
+PhMgBr
+PhCH2MgBr
Chemistry-
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.

Which of the following' compounds gives internal crossed Cannizzaro's reaction?
Chemistry-General
Chemistry-
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 having
-hydrogen which gives Cannizzaro's reaction is:
Chemistry-General
Chemistry-
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:
- HCHO
- all of these
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:
Chemistry-General
- HCHO
- all of these