List of practice Questions

Half-life for radioactive $^{14}C$ is 5760 yr. In how many years, 200 mg of $^{14}C$ will be reduced to 25 mg?

Glycolysis takes place in

In an A.C. circuit, the current flowing is \(I=5sin(100 t - \frac{π}{2}) ampere\) and the potential difference is \(V = 200 sin (100 t) volts\). The power consumption is equal to

When the key K is pressed at time t = 0, then which of the following statement about the current I in the resistor AB of the given circuit is true?

Mycorrhiza is a symbiotic relationship between roots of higher plants and

'Nothing lives for ever, but life continues'. What does it mean?

On heating one end of a piece of a metal, the other end becomes hot because of

Percentage error in the measurement of mass and speed are $2\%$ and $3\%$ respectively. The error in the estimation of kinetic energy obtained by measuring mass and speed will be

Phenol, p-Methylphenol, m-Nitrophenol and p-Nitrophenol follows order of increasing acidic strength

Respiratory quotient (R.) for fatty acid is

The electronic configuration of an element is $1s^2,2s^2 2p^6,3s^2 3p^3$. What is the atomic number of the element, which is present just below the above element in the periodic table?

The figure indicates the energy level diagram of an atom and the origin of six spectral lines in emission (e.g. line no. 5 arises from the transition from level B to A). Which of the following spectral lines will occur in the absorption spectrum?

The homologous organs are those that show similarity in