List of practice Questions

The de-Broglie wavelength and kinetic energy of a particle is $2000 \,?$ and $1\, eV$ respectively. If its kinetic energy becomes $1\, MeV$, then its de Broglie wavelength

The correct order of decreasing electronegativity values among the elements $I-beryllium, II-oxygen, III-nitrogen$ and $IV-magnesium$, is

The crystal with metal deficiency defect is

The condition where urea accumulates in blood is:

The change in potential energy when a body of mass $ m $ is raised to a height $ nR $ from earths surface is (R = radius of the earth)

The chromosomal number in the meiocytes of housefly is:

The collector supply voltage is $6 \,V$ and the voltage drop across a resistor of $ 600\,\Omega $ . in the collector circuit is $0.6 \,V$, in a transistor connected in common emitter mode. If the current gain is $20$, the base current is

The catalytic activity of the transition metals and their compounds is ascribed to:

The cavities of alveoli of lungs are lined by

The cell organelle associated with intracellular digestion of macromolecules is

The brain capacity of Homo erectus was about:

The behaviour of the chromosomes was parallel to the behaviour of genes during meiosis was noted by

The average quantity of urea excreted in urine by man per day is:

The back flow of faecal matter in the large intestine is prevented by the presence of:

The average depth of Indian ocean is about $3000\, m$. The fractional compression, $ \frac{\Delta V}{V} $ of water at the bottom of the ocean (given that the bulk modulus of the water $ =2.2\times {{10}^{2}}N{{m}^{-2}} $ and $ g=10m{{s}^{-2}} $ ) is

The area of the region covered by the TV broadcast by a TV tower of 100 m height is (Radius of the earth = $ 6.4 \times 10^6 \, m $ )

The angular frequency of a tuned collector oscillator having an LC feedback network is

The amplitude of the sinusoidially oscillating electric field of a plane wave is $ 60\, V/m $ . Then the amplitude of magnetic field is:

The ?amino acid derivative? among the following hormone is:

The acidic, basic or amphoteric nature of $Mn_2O_7, V_2O_5$ and $CrO$ are respectively

The alkaline earth metal with the least density value is

Tendons, which attach one bone to another bone are made up of

Sphincter of Oddi guards

Spermathecae in Pheretima is located in the segments:

Read the statements regarding structure of polynucleotide chain and choose the correct option. 1. $\quad$A nitrogenous base is linked to the pentose sugar through a$\quad$$\quad$ $\quad$$\quad$phospho-diester linkage. 2. $\quad$Two nucleotides are linked through 3'-5' N-glycosidic linkage to $\quad$$\quad$form a dinucleotide. 3. $\quad$The polynucleotide backbone is formed by sugar and phosphate. 4.$\quad$ A phosphate group is linked to 5'-OH of a nucleoside through a N-$\quad$$\quad$glycosidic linkage to form a nucleotide.