List of top Chemistry Questions asked in KEAM

Given the reaction: $ \text{Cr}_2\text{O}_7^{2-} + x e^- + y H^+ \to 2 \text{Cr}^{3+} + z H_2O $ Find the values of $x$, $y$, and $z$.
Which of the following is an interstitial compound?
Phenol is treated with conc. $ H_2SO_4 $, and then with conc. $ HNO_3 $. The compound A and B are formed.
Ethyl alcohol on reaction with $ H_2SO_4 $ at 413 K gives:
IUPAC name of allyl amine?
How many bridging complexes are there in $ \text{[Mg(Co)}_{10}\text{]} $?
In which reaction is Benzyl chloride converted to Benzaldehyde?
Ethanol is made unfit for drinking by adding?
Entropy decreases in which of the following reactions? $ \text{(A) } \text{Br}_2 (l) \to \text{Br}_2 (g) $ $ \text{(B) } \text{Br}_2 (g) \to \text{Br}_2 (l) $ $ \text{(C) } \text{Br}_2 (l) \to \text{Br}_2 (g) \text{ and } \text{Br}_2 (g) \to \text{Br}_2 (l) $
What is incorrect for Bond order?
Which of the following are neutral?
Formula of chromium ore?
Which has a higher boiling point ?
Bromomethane on reaction with Na and dry ether gives:
Which complex has dsp$^2$ hybridisation?
Find the log $ K $ value, if $ \Delta G = -11.4 $ and $ 2.303 \cdot RT = 5.7 \times 10^1 $.
Find the half-life of a first order reaction if $ K = 2.31 \times 10^5 \, \text{s}^{-1} $.
What is the hydration enthalpy of sucrose?
N\(_2\) exerts partial pressure of 7.698 bar in 1L water at 298K. What is the mole fraction of N\(_2\) in the solution? Given that N\(_2\) = 76.48K bar.
Which is a heterocyclic compound?
Find pH of the solution if \([H^+] = 2 \times 10^{-4} \, \text{mol/L}\)
Matrix match: Match the items in the list with the appropriate compounds.

Matrix match
  • i) Non-reducing disaccharide → c) Sucrose
  • ii) Reducing disaccharide → e) Maltose
  • iii) Aldohexose → b) Glucose
  • iv) Ketohexose → a) Fructose
  • v) Polysaccharide → d) Lactose

Identify the product of the reaction:

What is the Reimer Tieman reaction?
What is Layer's test?