Day 118: CBSE Class 10 Science
5 questions. Try each one first, then open its answer.
Question 1
Our Environment. Asked once: 2026 (same type asked 4 times)
14(a) Mention any one harmful effect of using plastic bags on the environment. Suggest better alternatives to the usage of plastic bags. (b) Paddy fields require a large amount of water. The pesticides and chemical fertilizers used are washed down into the soil or waterbodies. How do these chemicals reach our bodies ? What is this phenomenon known as ?Question 2
Our Environment. Asked once: 2025 (same type asked 4 times)
Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.20Assertion (A) : Food web is a network of several food chains operating in an ecosystem. Reason (R) : Food web decreases the stability of an ecosystem.Tap an option to check your answer.
Question 3
Our Environment. Asked once: 2026 (same type asked 4 times)
Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.9Assertion (A) : Ozone at higher levels of atmosphere is a product of UV radiation acting on oxygen molecule. Reason (R) : The higher energy of UV splits apart some molecular .Tap an option to check your answer.
Question 4
The Human Eye and the Colourful World. Asked once: 2026 (same type asked 4 times)
31The vision defect which arises due to gradual weakening of the ciliary muscles and diminishing flexibility of eye lens is :Tap an option to check your answer.
Question 5
The Human Eye and the Colourful World. Asked once: 2026 (same type asked 4 times)
31A thin beam of white light falls on a face of a glass prism and a spectrum is obtained on a screen. Which of the following options is the correct sequence of colours from top to bottom on the screen ?Tap an option to check your answer.