List of top Questions asked in AP EAPCET

Find the variance of the following frequency distribution:

Class Interval 
0--44--88--1212--16
Frequency1221
If \(\alpha, \beta, \gamma\) are the roots of the equation \[ x^3 - 13x^2 + kx + 189 = 0 \] such that \(\beta - \gamma = 2\), then find the ratio \(\beta + \gamma : k + \alpha\).
Match the following List-I (Type of reaction) \hspace{1cm List-II (Final product)
Reimer-Tiemann reaction
Consider the reaction sequence Dimethyl ketone \( \xrightarrow{\text{(i)CH}_3\text{MgCl (ii)H}_2\text{O}} \) X \( \xrightarrow{\text{(i)Na (ii)CH}_3\text{Br}} \) Y How many sp\(^3\) carbons are present in Y?
The element whose percentage composition in an organic compound can be determined by Carius method is:
\( x \) mg of an organic compound was analysed by Kjeldahl method. The ammonia evolved was absorbed in 50 mL of 0.5 M \( H_2SO_4 \). The unused acid required 60 mL of 0.5 M \( NaOH \) solution for complete neutralisation. If the percentage of nitrogen in the compound is \( 56 \), the value of \( x \) is:
The reaction of benzene diazonium chloride with Cu and HCl is known as:
Identify the correct set from the following:
In the given reaction sequence, conversion of Acetophenone (\( C_6H_5COCH_3 \)) to Ethylbenzene (\( C_6H_5CH_2CH_3 \)) is an example of: \[ \text{CH}_3\text{COC/} \] \[ \text{Anhy. AlCl}_3 \xrightarrow{\text{X}} \xrightarrow{\text{(1) N}_2\text{H}_4} Y \] \[ \Delta \xrightarrow{\text{(2) KOH / glycol}} \]
IUPAC names of mesityl oxide and oxalic acid are respectively:
Which one of the following compounds does not give benzoic acid when treated with alkaline \( KMnO_4 \)?
Which method is used to purify liquids having very high boiling points and liquids which decompose at or below their boiling point?
Consider the reaction sequence Dimethyl ketone \( \xrightarrow{\text{(i)CH}_3\text{MgCl (ii)H}_2\text{O}} \) X \( \xrightarrow{\text{(i)Na (ii)CH}_3\text{Br}} \) Y How many sp\(^3\) carbons are present in Y?
The element whose percentage composition in an organic compound can be determined by Carius method is:
\( x \) mg of an organic compound was analysed by Kjeldahl method. The ammonia evolved was absorbed in 50 mL of 0.5 M \( H_2SO_4 \). The unused acid required 60 mL of 0.5 M \( NaOH \) solution for complete neutralisation. If the percentage of nitrogen in the compound is \( 56 \), the value of \( x \) is:
The reaction of benzene diazonium chloride with Cu and HCl is known as:
Identify the correct set from the following:
In the given reaction sequence, conversion of Acetophenone (\( C_6H_5COCH_3 \)) to Ethylbenzene (\( C_6H_5CH_2CH_3 \)) is an example of: \[ \text{CH}_3\text{COC/} \] \[ \text{Anhy. AlCl}_3 \xrightarrow{\text{X}} \xrightarrow{\text{(1) N}_2\text{H}_4} Y \] \[ \Delta \xrightarrow{\text{(2) KOH / glycol}} \]
IUPAC names of mesityl oxide and oxalic acid are respectively:
Which one of the following compounds does not give benzoic acid when treated with alkaline \( KMnO_4 \)?
IUPAC names of the given compounds (I) and (II) are respectively
Identify the most stable carbocation from the following
What are the major products X and Y respectively in the following set of reactions?
Fe (dark)
Which of the following will undergo methylation with CH₃Cl / anhyd. AlCl₃?
What are X and Y respectively in the following set of reactions?
cresol