List of practice Questions

Given below are two statements:
Statement (I): Viscosity of gases is greater than that of liquids. 
Statement (II): Surface tension of a liquid decreases due to the presence of insoluble impurities. 
In the light of the above statements, choose the most appropriate answer from the options given below:

Fill in the blank by choosing the correct option to complete the part of the disclaimer given in a textbook:
The authors of the book ______ all reasonable care to ensure that the contents of the book do not violate any copyright or other intellectual property rights of any person in any manner.

Complete the slogan, by filling in the blank with the correct option:
Planting a tree is a very noble deed and ______ the earth from global warming!

Read the dialogue between Adam and Emma about a career option.
Adam : Why did you opt for a career in journalism?
Emma : I couldn’t resist my love for storytelling and my desire to expose the truth.
Select the option to complete the reporting of the above dialogue:
Adam asked Emma _______ in journalism. Emma passionately expressed that she couldn’t resist her love for storytelling and her desire to expose the truth.

Complete the given narrative, by filling in the blank with the correct option.
The opportunity to volunteer at the local food bank made me ______ the challenges faced by underprivileged communities.

Fill in the blank by choosing the correct option to complete the update on the school’s chess team.
It’s a victorious day!
Our school’s chess team ______ the interschool chess championship.

Complete the line from a song by filling in the blank with the correct option.
The whispering leaves tell your tale,
The silent stones ______ your journey,
The sun casts light on your path,
Leading you towards tomorrow’s glory.

Fill in the following blank choosing the most appropriate option from the ones given below :
As per NEP 2020, skill exposure will begin at _________ .

Consider the following statements:
(i) The sex of a child is determined by what it inherits from the mother.
(ii) The sex of a child is determined by what it inherits from the father.
(iii) The probability of having a male child is more than that of a female child.
(iv) The sex of a child is determined at the time of fertilisation when male and female gametes fuse to form a zygote.
The correct statements are:

Chromosomes:
(i) carry hereditary information from parents to the next generation.
(ii) are thread like structures located inside the nucleus of an animal cell.
(iii) always exist in pairs in human reproductive cells.
(iv) are involved in the process of cell division.
The correct statements are:

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

Assertion (A): Human female has a perfect pair of sex chromosomes.
Reason (R): Sex chromosome contributed by the human male in the zygote decides the sex of a child.

Assertion (A): Sex of the children will be determined by what they inherit from their mother. Reason (R): Women have XX sex chromosomes.

In an experiment to study independent inheritance of two separate traits: shape and colour of seeds, the ratio of the different combinations in F₂ progeny would be

A cross between two tall pea plants resulted in offspring having a few dwarf plants. The gene-combination of the parental plants must be

two statements are given — one labelled as Assertion (A) and the other labelled as Reason (R). Select the correct answer to these questions from the codes (A), (B), (C) and (D) as given below.
Assertion (A): Chromosomes inherited from the parents decide the sex of a child.
Reason (R): Y chromosome in a male child is inherited from the father.

At what distance from a convex lens should an object be placed to get an image of the same size as that of the object on a screen ?

Assertion (A): The rainbow is a natural spectrum of sunlight in the sky.
Reason (R) : Rainbow is formed in the sky when the sun is overhead and water droplets are also present in air.

The phenomena of light involved in the formation of a rainbow in the sky are

Assertion (A): Offsprings produced by asexual reproduction are genetically similar to the parents.
Reason (R): Asexual reproduction involves a single parent.

Assertion (A): Red light signals are used to stop the vehicles on the road.
Reason (R): Red coloured light is scattered the most so as to be visible from a large distance.

A ray of light is incident on a plane mirror at an angle of incidence of 15°. The deviation in the ray produced by the mirror is:

For an object, a convex mirror always forms an image which is:

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 from different parts of the body through vena cava.
(d) Left atrium transfers oxygenated blood to aorta which sends it to different parts of the body.