Maths-
General
Easy
Question
“All similar triangles are congruent”
- True
- False
The correct answer is 'False'.
Because in similar triangles, sides are in equal ratios, there lengths are not equal.
Related Questions to study
Maths-
Joey scored 75, 80,76,85 and 90 in five subjects out 100 each. Calculate his percentage?
- 89%
- 80%
- 81.2%
- 80.3%
Joey scored 75, 80,76,85 and 90 in five subjects out 100 each. Calculate his percentage?
Maths-General
- 89%
- 80%
- 81.2%
- 80.3%
Maths-
Find the number by which 7:21 is multiplied to make it equivalent to 84 : 252.
- 14
- 12
- 11
- 13
Find the number by which 7:21 is multiplied to make it equivalent to 84 : 252.
Maths-General
- 14
- 12
- 11
- 13
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
Chemistry-
The final product (III) obtained in the reaction,
is:
The final product (III) obtained in the reaction,
is:
Chemistry-General
Chemistry-
Tishchenko reaction of
gives:
Tishchenko reaction of
gives:
Chemistry-General
Chemistry-
Identity the product(s):
- both (a) and (b)
Identity the product(s):
Chemistry-General
- both (a) and (b)
Chemistry-
In the reaction,
X is:
- O3
- HNO3
- KMnO4
- O2
In the reaction,
X is:
Chemistry-General
- O3
- HNO3
- KMnO4
- O2