List of top Chemistry Questions asked in TS EAMCET

The metal having the highest melting point among lanthanides is
Which of the following is correct?

Match the following: 

What are the reagents A, B, and C respectively in the following reaction sequence? Reaction Sequence: 

Chemical Compounds

A: CH3CH2CHO

B: CH3COCH3

 

D: 

The concentration of 1 L of CaCO\(_3\) solution is \(10^{-5}\) M. Its concentration in ppm is. (Ca=40u; C=12u; O=16u)
The reagents/ chemicals X and Y that convert cyanobenzene to Schiff's base are
Assertion (A): Aldehydes are more reactive than ketones towards nucleophilic addition reactions.
Reason (R): In aldehydes, the carbonyl carbon is less electrophilic compared to ketones.

What are X and Y respectively in the following reactions? 

Identify the set, in which X and Y are correctly matched:

The pK\(_a\) values of X, Y, Z respectively are 8.3, 7.1, 10.2. What are X, Y, Z?
In the following reaction sequence, what are X and Y respectively?
nucleophilic addition of a methoxy group
Phosphodiester linkage that joins nucleotides together is present between which carbons of pentose sugar?
Which of the following sequence of reagents convert benzaldehyde to 4-chlorotoluene?
Which of the following statements is correct regarding boric acid?
In which of the following species, the ratio of s-electrons to p-electrons is the same?
In the following reaction: \[ \text{C} + \text{Conc.} \, \text{H}_2\text{SO}_4 \xrightarrow{\Delta} \text{X} + \text{Y} + \text{H}_2\text{O} \] X and Y in the above reaction are:
Copper matte is a mixture of:
A low boiling point metal contains high boiling point metal as impurity. The correct refining method is
Adsorption of a gas (A) on an adsorbent follows Freundlich adsorption isotherm. The slope and intercept (on y-axis) of the isotherm are 0.5 and 1.0, respectively. What is the value of \( \frac{x}{m} \), when the pressure of the gas (A) is 100 atm?
At 300 K, 3.0 moles of an ideal gas at 3.0 atm pressure is compressed isothermally to one half of its volume by an external pressure of 6.0 atm. The work done (in kJ) is:
At 61 K, one mole of an ideal gas of 1.0 L volume expands isothermally and reversibly to a final volume of 10.0 L. What is the work done in the expansion?

According to Fajan's rules, which of the following is not correct about covalent character?

In which of the following ionic pairs, the second ion is smaller in size than the first ion?

Identify the products R and S in the reaction sequence given.