cbse sample question paper 2023

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Sandeep Jha

Asked: December 26, 2023In: Class 10 Science

It would cost a man Rs. 3.50 to buy 1.0 kW h of electrical energy from the Main Electricity Board. His generator has a maximum power of 2.0 kW. The generator produces energy at this maximum power for 3 hours. Calculate how much it would cost to buy the same amount of energy from the Main Electricity Board.

Electrical energy is a form of energy resulting from the movement of charged particles (electrons). It powers electronic devices and is generated from various sources, including fossil fuels, renewables, and nuclear.

Sandeep Jha

Asked: December 26, 2023In: Class 10 Science

How many isomers are possible for the compound with the molecular formula C4H8? Draw the electron dot structure of branched chain isomer. How will you prove that C4H8 and C5H10 are homologues?

Isomers are molecules with the same chemical formula but different structures. Structural isomers differ in arrangement, geometric isomers have different spatial arrangements, and stereoisomers have the same connectivity but differ in spatial arrangement.

Prasant

Asked: December 22, 2023In: Class 10 Science

Create a terrestrial food chain depicting four trophic levels. Why do we not find food chains of more than four trophic levels in nature?

CBSE class 10 science sample question paper 2023-2024

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