List of practice Questions

In the formula $X = 3YZ^2$, $X$ and $Z$ have dimensions of capacitance and magnetic induction respectively. The dimensions of $Y$ in $MKSQ$ system are

In the following diagram of a leg of cockroach some parts have been indicated by alphabets. Choose the answer in which these alphabets have been correctly matched with the parts which they indicate

In the following reaction : $ {Acetamide ->[P_2O_5][\Delta] Y ->[H_2O/HCl][\Delta] Z ->[NaOH][CaO] CH_4 }$, identify Z :

In the following reaction, $C_6H_5COOCH_3\xrightarrow[H_2O/H^+]{LiAlH_4}A+B$ A and Bare respectively

In the first transition series, the element which shows highest oxidation state has the electronic configuration

In the following chemical reaction: $ {Ag_2O + H_2O + 2e^{-} -> 2Ag + 2OH^{-}} $

In the following compounds The order of acidity is

In the following decomposition reaction $ {2H_2O ->[\Delta] 2 H_2 + O_2}$

In the extraction of aluminium from bauxite, cryolite is used to

In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with:

In the $F_2$ generation of a Mendelian dihybrid cross the number of phenotypes and genotypes are

In the figure a block of weight $60\,N$ is placed on a rough surface. The coefficient of friction between the block and the surface is $0.5$. The weight $W$ such that the block does not slip on the surface is

In the disproportionation reaction $ {3 \, HClO_3 -> HClO_4 + Cl_2 + 2 O_2 + H_2O}$ the equivalent mass of the oxidising agent is (molar mass of $ {HClO_3 = 84.45}$)

In the electrolysis of dilute $H_2SO_4$ using platinum electrode

In the embryos of a typical dicot and a grass, true homologous structures are

In the coordination compound $K_4[Ni(CN)_4]$, the oxidation state of nickel is

In the cubic close packing, the unit cell has

In the dead beat galvanometer, the coil is wound on a frame made of :

In the Diagram given figure of Lac operon

In the common emitter configuration of n-p-n transistor $10^{10}$ electrons enter the emitter in 1 $\mu s$ and 2% of the electrons are lost to the base, the current gain of the amplifier is

In the complex $[Pt(py)_4] [PtCl_4]$, the oxidation numbers of Pt atom in former and later part of the compound are respectively

In the compounds $ {KMnO_4}$ and $ {K2Cr2O7}$ the highest oxidation state is of the element :

In the conversion of pyruvic acid to acetyl coenzyme A, pyruvic acid is

In the blast furnace (extraction of iron) the highest temperature is in

In the Bohr model of the hydrogen atom, the lowest orbit corresponds to