List of practice Questions

Choose the correct statements from the following
I. Zygote is the vital link for continuity of species.
II. In water plants the number of male gametes produced are several times more than the number of female gametes.
III. Meiosis can occur in haploid organisms.
IV. Adventitious buds are developed on leaf margins of Bryophyllum.

Identify the correct sequence to the following statements
A) Seeds are attached to the fruits
B) Free nuclear endosperm
C) Grass family cotyledon
Options :

Match the following

Assertion (A): In plant vacuole, the concentration is higher than the cytoplasm.
Reason (R): Tonoplast facilitates the transport of ions and other materials against concentration gradient.
Identify the correct option from the following
Options:

Study the following table and identify the correct combination

Assertion (A): Lipids are not true Biomacromolecules.
Reason (R): The molecular weight of lipids is less than 800 Daltons.

Assertion (A): Whittaker proposed a five kingdom classification based on many criteria.
Reason (R): This is due to the understanding of the different scientists differently over time.
Identify the correct option from the following:

Choose the correct statements among the following:
I. Krishi Parasaram describes different types of forests.
II. Hieroglyphics are related to the crop plants in the form of pictures.
III. Jatropha and Pongamia are rich in hydrocarbons.
IV. C.G.K. Ramanujan studied the crystallization of enzyme urease.

Match the following

Choose the correct statements among the following:
[I.] Suckers are underground stems growing horizontally beneath the soil and become aerial.
[II.] The function of petiole is to attach leaf to stem.
[III.] Alstonia shows opposite phyllotaxy.
[IV.] In Pisum, terminal leaflets form as tendril.

Choose the correct sequence of fruits with the following characters
A. Multicarpellary syncarpous, unilocular ovary with stony pericarp
B. Fruit with fleshy thalamus and developed by inferior ovary
C. Apocarpous gynoecium develops into fruitlets

Match the following:

For the reaction X(g) $\rightarrow$ Y(g) at equilibrium, the partial pressure of Y is one-third that of X. What is the standard Gibbs energy change ($\Delta G^\circ$) for this reaction?

A gaseous mixture at temperature T(K) consists of dihydrogen and dioxygen, with a total pressure of 2 2 bar. If the mixture is 33.33% dihydrogen and 66.67% dioxygen, what is the approximate partial pressure (in bar) of dihydrogen? (T(K), 2 bar total pressure)

The electron gain enthalpy (Cl₂,H) of chlorine is -3.7 eV mol^-1. How much energy (in kcal mol^-1) is released when 71 g of chlorine atoms are completely converted into Cl^- ions in gaseous state? (1 eV = 23 kcal)

If a bullet of mass 2 g travels with velocity of 3 × 10³ cm s^-1, its wavelength (in m) is: (h = 6.6 × 10^-34 Js)

In the given circuit, the input voltage across base resistance 10V. If base-emitter and collector-emitter voltages are zero, then the current amplification factor of the transistor is:

If the junction diodes $D_1$ and $D_2$ in the given circuit are ideal, then the forward biased resistance and reverse biased resistance is infinity:

If the magnitude of the electric field of an electromagnetic wave in a medium is given by E = 10⁷ sin(6 × 10⁸ t - 0.01x) N C^-1, then the frequency and speed of the electromagnetic wave respectively are: (In the equation x is in metre and t is in second)

The magnetic field at the centre of a circular coil of radius 10 cm, having 250 turns and carrying a current of $\frac{8}{\pi}$ A is:

The ratio of the currents i$_1$, i$_2$ and i$_3$ in the circuit is:

If five parallel plate capacitors are connected to the battery of 240 V as shown in the figure, the charge on 1$\mu$F capacitor is:

Three point charges +Q and +q are placed on x-axis at distances 0, d/2, and d respectively from the origin. If the resultant electrostatic force on the charge +Q placed at x = 0 is zero, then the value of q is:

If the intensities of two interfering light waves in a medium are I and 4I, then the maximum and minimum intensities are respectively:

The mean translational kinetic energy of a gas molecule at a temperature of 47 $^\circ$C is: (Boltzmann constant = 1.38 $\times$ 10$^{-23}$ J K$^{-1}$)