Copper oxide is black in colour. When dilute hydrochloric acid is added in it, the colour of the solution becomes blue green due to formation of copper chloride.
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When a ray of light passes through the glass slab, then the angle of incident is found to be nearly equal to angle of emergence and greater than angle of refraction.
Class 10th Science Session 2022-23 Class 10 Science Terminal Exams MCQ Solutions Class X Science MCQ Extra Questions Answers 10th Science Terminal Exam Based MCQ Extra Questions
Class 10 Science Terminal Exams MCQ Solutions Class X Science MCQ Extra Questions Answers 10th Science Terminal Exam Based MCQ Extra Questions Class 10th Science Session 2022-23
Class 10th Science Session 2022-23 Class 10 Science Terminal Exams MCQ Solutions Class X Science MCQ Extra Questions Answers 10th Science Terminal Exam Based MCQ Extra Questions
We can see the sky because the sunlight gets scattered by the particles present in the atmosphere. Without it, the sky would be dark and black with just the sun and the stars as bright objects in space.
Class 10th Science Session 2022-23 Class 10 Science Terminal Exams MCQ Solutions Class X Science MCQ Extra Questions Answers 10th Science Terminal Exam Based MCQ Extra Questions
Class 10 Science Terminal Exams MCQ Solutions Class X Science MCQ Extra Questions Answers Class 10th Science Session 2022-23 10th Science Terminal Exam Based MCQ Extra Questions
You must know that the main site of photosynthesis, is Chloroplast which is present in the leaf. Chloroplast contains a green pigment (appears green colour) called chlorophyll.
Remember, a light or objects looks black, when an object absorbs all the seven colours and reflects none. That time it looks like black in colour.