Predict which of the following changes can be reversed and which cannot be reversed Class 7
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Which of the following statements are the characteristics of a physical change? Class 7
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Activity 5.8 Let us think Table 5.2 Can changes be reversed? Class 7
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Activity 5.5 Let us investigate (Pages 62-63) What happens to the candle flames in the two cases? Class 7
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Activity 5.4 Let us experiment What do you observe? Class 7
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Activity 5.2 Let us create and discuss Is there any similarity in changes listed in A, B and C? Class 7
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Activity 5.1 Let us think and reflect Table 5.1 Some changes observed around us Class 7
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These students are describing some changes. What kinds of changes are they talking about? Class 7
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An ironsmith heats iron before making tools. Why is heating necessary in this process? Class 7
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One of the methods of protecting iron from getting rusted is to put a thin coating Class 7
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How do the different properties of metals and non-metals determine their uses in everyday life? Class 7
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You are provided with three iron nails, each dipped in oil, water and vinegar. Which iron nail will not rust, and why? Class 7
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You are provided with the following materials. Discuss which material would be your choice Class 7
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What happens when oxygen reacts with magnesium and sulfur. What are the main differences Class 7
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Match the uses of metals and nonmetals given in Column I with the jumbled names of metals Class 7
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Why are only a few metals suitable for making jewellery? Class 7
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Why are only a few metals suitable for making jewellery? Class 7
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State with reason(s) whether the following statements are True [T] or False [F] Aluminium and copper are examples class 7
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Let Us Enhance Our Learning Which metal is commonly used to make food packaging Class 7
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Activity 4.8 Let us explore What do you observe? Class 7
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Activity 4.7 Let us experiment (Demonstration activity) Class 7
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Activity 4.6 Let us investigate (Demonstration activity) (Page 51) What do you observe ? Class 7
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Activity 4.4 Let us design and create Table 4.2 Conduction of electricity by different Class 7
Activity 4.4 Let us design and create Class 7Activity 4.4 Let us design and create Class 7Answer:S.
Activity 4.3 Let us investigate Which of the spoons get hotter? Class 7
Activity 4.3 Let us investigate Class 7Activity 4.3 Let us investigate (Page 47) Class 7Question 1.W
Activity 4.2 Let us investigate Do you notice any difference in the sound Class 7
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Activity 4.1 Let us explore Table 4.1 Appearance, hardness, and effect of hammering Class 7
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An LED requires two cells in series to glow. Tanya made the circuit as shown in Fig. 3.21. Class 7
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Suppose the ' + ' and ' - ' symbols cannot be read on a battery. Suggest a method to identify Class 7
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In Fig. 3.20 in which case(s) the lamp will not glow when the switch is closed? Class 7
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Vidyut has made the circuit as shown in Fig. 3.19. Even after closing the circuit, the lamp does not glow Class 7
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In Fig. 3.18 If S2 is in 'ON' position, S1 is in 'OFF' position, which lamp(s) will glow? Class 7
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A student forgot to remove the insulator covering from the connecting wires while making a circuit. Class 7
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In Fig. 3.17 if the filament of one of the lamps is broken, will the other glow? Justify your answer. Class 7
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Observe Fig. 3.16 With which material connected between the ends A and B, the lamp will not glow? Class 7
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Choose the incorrect, statement. A switch is the source of electric current in a circuit. Class 7
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Activity 3.2 Let us observe (Page 25) In a torch, we generally use more than one cell. Class 7
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Activity 3.1 Let us explore (Page 24) Why does the torch lamp glow in one position of its switch? Class 7
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Can you help Nihal by adding some more uses to his lists? Also, suggest some other ways of grouping Class 7
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Observe and analyse the information given in the following flowchart. Complete the missing information. Class 7
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The extract of red rose turns the liquid X to green. What will the nature of liquid X be? Class 7
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Three liquids are given to you. One is vinegar, another is a baking soda solution, and the third is a sugar solution Class 7
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How can natural indicators be prepared? Explain by giving an example.
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Keerthi wrote a secret message to her grandmother on her birthday using orange juice Class 7
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Grape juice was mixed with red rose extract; the mixture got a tint of red colour. Class 7
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Could you suggest various materials which can be used for writing the message on the white sheet Class 7
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Manya is blindfolded. She is given two unknown solutions to test and determine Class 7
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A liquid sample from the laboratory was tested using various indicators Class 7
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Observe and analyse Figs. 2.13, 2.14, and 2.15, in which red rose extract paper Class 7
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You are provided with three unknown solutions labelled A, B, and C Class 7
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A solution turns the red litmus paper to blue. Excess addition of which of the following solution Class 7
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