List of practice Questions

Which of the following provides most evident proof of evolution?

The vitamin which is essential for blood clotting is

The vacuole is lined by a membrane called

$t$-butyl chloride preferably undergo hydrolysis by

Synsacrum of fowl consists of about

In which form does the food transported in plants?

In Pheretima, septa are absent between which segments?

In Mollusca, eye is present over a stalk, called

In frog heart, there are cardiac muscles which consists of fibres called

If root of a flowering plant has $24$ chromosomes, then its gamete has how many chromosomes?

$H - O - H$ bond angle in $H _{2} O$ is $104.5^{\circ}$ and not $109^{\circ} 28'$ because of

Diwali rocket is ejecting $50\, g$ of gasses at a velocity of $400 \,m/s$ . The accelerating force on the rocket will be

Contractile vacuole in protozoan Amoeba is meant for

Clamp connections are observed in

Chromosome complement with $2n - 1$ is called

Coir which is obtained from fruit of coconut is

Duramen is present in

In cell cycle, during which phase, chromosomes are arranged in equatorial plate?

Initiation codon is

A symmetric double convex lens is cut in two equal parts by a plane perpendicular to the principal axis. If the power of the original lens is $4\,D$ , the power of a cut lens will be

In radioactive decay process, the negatively charged emitted $\beta-$ particles are

A transformer is used to light a $100\, W$ and $110\, V$ lamp from a $220\, V$ mains. If the main current is $0.5\, A$, the efficiency of the transformer is approximately

A car moves from $X$ to $Y$ with a uniform speed $v_{u}$ and returns to $Y$ with a uniform speed $v_{d}$. The average speed for this round trip is

Under the influence of a uniform magnetic field a charged particle is moving in a circle of radius $R$ with constant speed $v$ . The time period of the motion

What is the wavelength (in $m$ ) of a particle of mass $6.62 \times 10^{-29} g$ moving with a velocity of $10^{3} ms ^{-1} ?$