List of practice Questions

Select from the following a process in which a combination reaction is involved:

The oxide which can react with HCl as well as KOH to give corresponding salt and water is

Consider the following cases:
(a) CaSO₄ + Al →
(b) CuSO₄ + Ca →
(c) FeSO₄ + Cu →
(d) ZnSO₄ + Mg →
The cases in which new products will form are –

Identify the correct statement about the following reaction:
2H₂S + SO₂ → 2H₂O + S

Consider the following statements about homologous series of carbon compounds:
(a) All succeeding members differ by –CH₂ unit.
(b) Melting point and boiling point increases with increasing molecular mass.
(c) The difference in molecular masses between two successive members is 16 u.
(d) C₂H₂ and C₃H₄ are NOT the successive members of alkyne series.
The correct statements are –

Which of the following statement(s) is (are) true about human heart?
(a) Right atrium receives oxygenated blood from lungs through pulmonary artery.
(b) Left atrium transfers oxygenated blood to left ventricle which sends it to various parts of the body.
(c) Right atrium receives deoxygenated blood through vena cava from upper and lower body.
(d) Left atrium transfers oxygenated blood to aorta which sends it to different parts of the body.

Select out of the following a gland which does NOT occur as a pair in the human body:

In human respiratory system, when a person breathes in, the position of ribs and diaphragm will be:

Identify the mode of asexual reproduction in the following organism:

A cross made between two pea plants produces 50% tall and 50% short pea plants. The gene combination of the parental pea plants must be

Consider the following statements in the context of human eye:
(a) The diameter of the eye ball is about 2.3 cm.
(b) Iris is a dark muscular diaphragm that controls the size of the pupil.
(c) Most of the refraction for the light rays entering the eye occurs at the crystalline lens.
(d) While focusing on the objects at different distances the distance between the crystalline lens and the retina is adjusted by ciliary muscles.
The correct statements are –

The maximum resistance of a network of five identical resistors of $\frac{1}{5}$ $\Omega$ each can be –

Strength of magnetic field produced by a current carrying solenoid DOES NOT depend upon:

Assertion (A): Different metals have different reactivities with water and dilute acids.
Reason (R): Extraction of a metal from its ore depends on its position in the reactivity series.

The characteristic equation of SR flip-flop is

In priority encoder, if two or more inputs are equal to ____ will take highest priority

The 8-to-3 encoder is also called

The values of the segments 'abcdefg' of seven segment display for the BCD input of '0101'? (Assuming standard segment labeling: a-top, b-top-right, c-bottom-right, d-bottom, e-bottom-left, f-top-left, g-middle. And BCD '0101' is decimal 5.)

Quantization error in ADC is due to

An n-to-m line decoder is used to generate (Note: "n-to-m line decoder" where \(m = 2^n\))

Simplify \( AB + A\bar{C} + \overline{A}BC(AB+C) \)

Convert a decimal number 3509.14453125 into a hexadecimal number