List of top Questions asked in Delhi UMET/DPMT- 2011

A chemical reaction proceeds into the following steps Step I,$\hspace15mm 2A \rightleftharpoons X$ fast Step II,$\hspace10mm X + B \rightleftharpoons Y$ slow Step III,$\hspace10mm Y + B \rightleftharpoons $ Product fast The law for the overall reaction is

A solution is $0.1 M$ with respect to $Ag ^{+}, Ca ^{2+}, Mg ^{2+}$ and $Al ^{3+}$, which will precipitate at lowest concentration of $\left[ PO _{4}^{3-}\right]$ when solution of $Na _{3} PO _{4}$ is added?

How many $ 1\,\mu F $ capacitors must be connected in parallel to store a charge of $1\, C$ with a potential of $110\, V$ across the capacitors?

Most stable carbocation is

The equilibrium constant for mutarotation $\alpha-D \rightleftharpoons \beta-D$ Glucose is $1.8$. What percentage of $\alpha$ form remains at equilibrium?

Given a gas phase reaction, $\hspace10mm 2A(g)+B(g) \rightleftharpoons C(g)+D(g)$ Which one of the following changes will affect the value of $K_c$?

Taxonomic hierarchy refers to

Number of isomeric forms (constitutional and stereoisomers) for $ [Rh(en)_{2}(NO_{2})\,(SCN)^{+} $ are

Natural cytokinins are synthesized in tissue that are

Maltose gives rise to two molecules of

Identify the reagents $(X, Y, Z)$ used in the conversion of $3$-methylaniline to $3$-nitrotoluene.

The work done by an applied variable force $F=x +x^{3}$ from $x=o m$ to $x=2, m$ where $x$ is displacement, is

The correct decreasing order of dipole moment in $ CH_{3}Cl,\,CH_{3} Br$ and $ CH_{3}F $ is

The chromosome constitution $2n - 2$ of an organism represents

The reduced mass of two particles having masses $m$ and $2\, m$ is

The mean free path of collision of gas molecules varies with its diameter $(d)$ of the molecules as

When an $AC$ voltage is applied to a $L-C-R$ circuit, which of following is true ?

A body of mass $M$ starts sliding down on the inclined plane where the critical angle is $\angle ACB = 30^{\circ}$ as shown in figure. The coefficient of kinetic friction will be

If the total amount of adenine and thymine in a double-stranded DNA is $60\%$, the amount of guanine in this DNA will be

If two pea plants having red (dominant) coloured flowers with unknown genotypes are crossed, $75\%$ of the flowers are red and $25\%$ are white. The genotypic constitution of the parents having red coloured flowers will

Which one of the following would not lead to formation of clones?

A plant species which has been exploited for the production of Hirudin is

The variation/difference in the off springs of a species from their parents constitutes an important component of

Necrosis in crops is due to the deficiency of

A population growing in a habitat with limited resources shows four phases of growth in the following sequence.