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Answer the following by using the term which is used for describing a chromosome having a centromere at its middle.

There are four main types of chromosomes: metacentric, submetacentric, acrocentric, and telocentric. Chromosomes Chromosomes are found within most living cells’... View Article

Identify the most basic compound from the following: a)Primary amines Secondary amines b)Aromatic amines Aliphatic amines

Aliphatic amines are more basic than aromatic amines. Further secondary amines are more basic than primary amines. In aromatic amines,... View Article

The sum of two consecutive odd numbers is always divisible by 4. Verify this statement with the help of some examples.

The sum of any two consecutive numbers is always odd, and the sum of two consecutive odd numbers is always divisible... View Article

If the product of two whole numbers is zero, can we say that one or both of them will be zero? Justify through examples.

Yes, if the product of two whole numbers is zero, then one or both of them will definitely be zero.... View Article

Which of the following does not undergo Aldol condensation? a) Propionaldehyde b) Acetone c) Formaldehyde d) Acetaldehyde

Among the following, Formaldehyde doesn’t undergo aldol condensation because it does not contain α-hydrogen. Aldol condensation In aldol condensation, an enolate... View Article

What does area under the Maxwell distribution curve represent?

The area under the curve represents the total number of gas molecules. Maxwell distribution curve The Maxwell-Boltzmann distribution describes the... View Article

Arrange the following substances in increasing order of forces of attraction between the particles water, sugar, oxygen.

The increasing order of forces of attraction between the given particles of water, sugar and oxygen is Oxygen < Water... View Article

How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?

Living organisms are dependent on the soil in the following ways: Soil plays an important role in a biogeochemical cycle,... View Article

Which of the following waves can be polarized? a) Transverse waves b) Tsunami waves c) Vibration of the drums d) Music woofers

Polarization is the property shown by transverse waves. Polarization in transverse waves Longitudinal waves cannot be plane polarised because vibration... View Article

Which one is correct base pairing for DNA molecule? a) Adenine – Thymine b) Thymine – Guanine c) Cytosine – Uracil d) Thymine – Uracil

A DNA molecule consists of 4 base pairs. They are adenine, guanine, cytosine and thymine—adenosine pairs with thymine using two... View Article

How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?

The characteristics used to classify plants are different from animals. It is because the basic designs of animals are very... View Article

Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.

Alveoli and nephron act as the structural and functional units of lungs and kidneys respectively. Alveoli occur in the respiratory... View Article

Which of the following component is produced from megakaryocytes? a) Red Blood Cells b) White Blood Cells c) Platelets d) Plasma

Platelets are cell fragments produced from megakaryocytes (special cells in the bone marrow). What are megakaryocytes? Megakaryocytes are cells in... View Article

Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?

The passengers in a bus tend to fall backward when it starts suddenly due to inertia as the passengers tend... View Article

Write all the integers between the given pairs (write them in the increasing order): (a) 0 and -7 (b) -4 and 4 (c) -8 and -15 (d) -30 and -23

To write the integers between any two numbers, we will exclude the given two corners integers and write all the... View Article

A person holds a bundle of hay over his head for 30 minutes and gets tired. Has he done some work or not? Justify your solution.

Work is done whenever the given two conditions are satisfied: A force acts on the body. There is a displacement... View Article

The numbers 13 and 31 are prime numbers. Both these numbers have same digits 1 and 3. Find such pairs of prime numbers up to 100.

Answer: Prime numbers are the positive integers having only two factors, 1 and the integer itself. 1 is neither a prime... View Article

Insert commas suitably and write the names according to Indian system of numeration: (a)87595762 (b)8546283 (c)99900046 (d)98432701

To write the given number in the Indian system of numeration, we need to follow the rules. As per the... View Article

Among the following which one has the highest paramagnetism? a) [Cr(H₂O)₆]³⁺ b)[Fe(H₂O)₆]²⁺ c)[Cu(H₂O)₆]²⁺ d) [Zn(H₂O)₆]²⁺

Larger the number of unpaired electrons, the more paramagnetism it has. The correct option is [Fe(H2O)6]2+ Paramagnetic character ∝ Number of unpaired... View Article

Why are human beings who look so different from each other in terms of size, colour and looks said to belong to the same species?

Although human beings vary widely in size, colour, and looks, human beings’ genetic makeup is similar. The variations in size,... View Article

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