CBSE Class 10th Science | Chapter 14. Sources of Energy | Solved Exercises

Question 1. A solar water heater cannot be used to get hot water on
(a) a sunny day.
(b) a cloudy day.
(c) a hot day.
(d) a windy day.

Answer. (b) a cloudy day.

CBSE Class 10th Science | Chapter 13. Magnetic Effects of Electric Current | Solved Exercises

Question 1. Which of the following correctly describes the magnetic field near a long straight wire?
(a) The field consists of straight lines perpendicular to the wire.
(b) The field consists of straight lines parallel to the wire.
(c) The field consists of radial lines originating from the wire.
(d) The field consists of concentric circles centred on the wire.

Answer. (d) The field consists of concentric circles centred on the wire.

CBSE Class IX (9th) Science | All Chapters Solved Exercises

 This post contains chapter wise links to solutions of exercises   from  NCERT textbook of Science for Class IX (9th) under CBSE. Each link, provides solutions to questions given in the  main exercises of the chapters,  including multiple choice questions, numericals and In Text questions given after a main section to check the under standing of  the topic by students .