List of top Questions asked in ICSE Class X board- 2026

Explain the term 'Population Density' with reference to human beings.
A 17-year-old girl was having irregular menstrual cycle. Her mother took her to their family physician. She was diagnosed with Adrenal Virilism. Study the picture given below and answer the following questions. (a) Hypersecretion of which hormone results in Adrenal Virilism in human females?
(b) Mention one symptom of this disorder.
Mention any two secondary sexual characteristics in a 15-year-old boy.
Arrange the following food chains in a proper sequence. (a) Small fish, Algae, Mosquito larvae, Kingfisher
RBCs do not have nuclei. Discuss its advantage.
A 28-year-old pregnant lady goes to a gynecologist for a check-up. Her doctor explains that there is normal growth of the foetus and the placenta is functioning well.
(a) Who proposed the theory of Natural Selection?
Name the organism which was used as an example to explain Industrial Melanism.
Differentiate between Plasmolysis and Deplasmolysis.
How are the Cytons and Axons of neurons arranged in the following? (a) Cerebrum
(b) Spinal Cord
What is the scientific name of modern man?
The organ that secretes this hormone.
Which is the resting but metabolically active stage of the cell cycle?
The hormone responsible for this disorder.
Choose the odd one out from the following terms and name the category to which the others belong:
The evolutionary process by which new species arise from the existing ones.
The type of waste generated in hospitals and pathological laboratories.
The surgical technique for females that can be used to prevent pregnancy.
A defect in our eye in which some parts of the object are in focus while the other parts are blurred.
Varun’s mother added plenty of salt to the mango pickle she made. This is to:
The tropic movement wherein the tendrils of a pea plant twine around a support.
During which phase of the menstrual cycle does the endometrium shed?
What does Swachh Bharat Abhiyan aim to achieve in India?
Which is the correct sequence of blood flow in the Pulmonary and Systemic Circulation?
A person suffering from kidney failure has proteins in the urine. What is this condition called?