List of practice Questions

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.

Read the statements regarding frog and choose the correct option. 1. $\quad$The frog never drinks water but absorbs water through its skin. 2. $\quad$The hindlimbs of frog ends in four digits. 3.$\quad$ Male frogs have vocal sacs. 4. $\quad$Male frogs have a copulatory pad on the second digit of the$\quad$$\quad$forelimb. 5. $\quad$Frogs have bilobed tongue.

Read the following statements and identify the correct option given (a) $\quad$Sap vacuoles ............. contain digestive enzymes with the help of $\quad$$\quad$which nutrients are digested (b) $\quad$Contractile vacuoles .............. take part in osmoregulation and $\quad$$\quad$excretion (c)$\quad$ Food vacuoles ............. store and concentrate mineral salts as $\quad$$\quad$well as nutrients (d) $\quad$Air vacuoles ............. store metabolic gases and help in $\quad$$\quad$buoyancy of cells

Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present at:

Proboscis gland in Balanoglossus is associated with:

Proliferation of endometrium of uterus is controlled by

Necrosis, or death of tissue particularly leaf tissue, is due to the deficiency of:

Light of wavelength $5000 \,?$ is incident normally on a slit of width $2.5 \times 10^{-4} \, cm$. The angular position of second minimum from the central maximum is

Let $S(n)$ denote the sum of the digits of a positive integer n. e.g. $S(178)=1+$ $7+8=16 .$ Then, the value of $S(1)+S(2)+S(3)+\ldots+S(99)$ is

$ \int{(x+1){{(x+2)}^{7}}}(x+3)dx $ is equal to

$ \int{\frac{\sec x cosec x}{2\cot x-\sec x\cos ecx}}dx $ is equal to