List of top Questions asked in KCET

The major product 'A' in the given reaction is
Benzaldehyde + Acetophenone \(\xrightarrow{\text{OH}^- / 293\text{K}}\) 'A' (Major product)

The organic compounds P, Q, and R are: 
\(\underline{\hspace{3cm}}\).

The correct IUPAC name of CH\(_3\) - C(CH\(_3\))\(_{2}\) - O - C\(_2\)H\(_5\) is

Glycerol is a trihydric alcohol. It contains _____
 

R-CH\(_2\)OH is converted into R-CHO by reacting with ______
 

In which of the following option/options, the order of arrangement does not agree with the variation of property indicated against it?
(a) BF\(_3\)>NF\(_3\)>NH\(_3\) (Dipole moment)
(b) HgCl\(_2\)>NH\(_4\)\(^+\)>SF\(_4\) (Bond angle)
(c) NH\(_3\)<H\(_2\)O<HF (Strength of intermolecular hydrogen bonding)
(d) H - I>H - Br>H – Cl (Bond length)
Which of the following hormones is not secreted by human placenta?
In the following pedigree chart, the mutant trait is shaded black. The gene responsible for the trait is:

Match the column I with column II. 
Column-I: (A) Autosomal trisomy, (B) Allosomal trisomy, (C) Allosomal Monosomy, (D) Cystic fibrosis 
Column-II: (i) Turner's Syndrome, (ii) Mendelian disorder, (iii) Klinefelter's Syndrome, (iv) Down's Syndrome
 

Identify the correct statement.
Select the odd one out.
Select the plant species, where emasculation is not required for artificial hybridisation experiment.
Which of the following characters is not required for autogamy?
In dihybrid cross, when \(F_1\) plants (Rr Yy) are self hybridized, the ratio of segregation of yellow and green in \(F_2\) is
The genotype of a husband and wife are $I^A I^B$ and $I^A I^O$. Among the blood types of their children, how many different genotypes and phenotypes are possible?
In apple, the chromosome number of gametes is 17. What is the chromosome number in its Primary Endosperm Nucleus (PEN)?
Which pair of the following cells in the embryo sac are destined to change their ploidy after fertilization?
In a dithecous anther, each pollen sac contains 1000 MMC. What is the total number of pollen grains produced by the anther?
Find the correct statement.
(1) Generally, a gene regulates a trait but sometimes one gene has effect on multiple traits.
(2) The trait AB-blood group of man is regulated by one dominant allele and another recessive allele. Hence it is co-dominant.
The gene for haemophilia is located on 'x' chromosome. Hence it is normally impossible for a:
If a colour-blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness?
The conductivity of centimolar solution of KCl at 298 K is 0.021 $\Omega^{-1}$ cm$^{-1}$. The resistance of the cell containing the solution at 298 K is 60 $\Omega$. The value of cell constant is
$\Lambda^\circ_m (NH_4OH)$ is equal to ___________
During the electrolysis of acidified water, 16 g of O$_2$ gas is formed. The volume of H$_2$ gas liberated at cathode under STP conditions is
The activation energy for the reaction X \(\rightarrow\) Y is 150 kJ mol\(^{-1}\). The change in enthalpy for the above reaction is -135 kJ mol\(^{-1}\). Then the activation energy for Y \(\rightarrow\) X is _________.