Please select a subject first
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Match the pairs.
| Group A | Group B |
| 1. Tamarind | a. Acetic acid |
| 2. Curd | b. Citric acid |
| 3. Lemon | c. Tartaric acid |
| 4. Vinegar | d. Lactic acid |
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Table salt is acidic.
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The perpendicular to the mirror at the point of incidence is called ______.
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The reflection of light from a wooden surface is _________ reflection.
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Draw a figure describing the following.
The reflecting surface of two mirrors make an angle of 90∘ with each other. If a ray incident of one mirror has an angle of incidents of 30∘, draw the ray reflected from the second mirror. What will be its angle of reflection?
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How will you explain the statement 'we cannot see the objects in a dark room'?
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Explain the differences between regular and irregular reflection light.
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If the angle between the plane mirror and the incident ray is 40∘, what are the angles of incidence and reflection?
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If the angle between the mirror and the reflected ray is 23∘, what is the angle of incidence of the incidence ray?
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Draw a figure showing the following.
- Incident Ray
- Normal
- Angle of incidence
- Angle of reflection
- Point of incidence
- Reflected ray
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Write a scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
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Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
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Write a scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
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Read the passage and answer the questions.
| Master 'X' is a 3-year-old child. He is living with his family in a slum. A public toilet is present near his house. His father is a drunkard. His mother does not know the importance of a balanced diet. |
- Master 'X' can suffer from which different possible diseases in the above conditions
- How will you help him and his family in this situation?
- Which disease can occur to the father of master 'X'?
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Enlist the names and composition of the medicines present at your home.
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An electric current flowing in a wire creates ______ around the wire.
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There are about _________ stars in our galaxy.
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Prepare a chart showing 'Do's' and 'don'ts' at the time of the earthquake.
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What are the specifications of an earthquake proof building?
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Is there any relations between dam and earthquake? Explain.
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