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    • Posted by Anand Mundada 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Nihal Yadav 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Urvashi Lalwani 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Hindi Hindi 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Diksha Sharma 7 years, 8 months ago

    15/20 3/4 75/100 0.75

    3Thank You

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    • Posted by Lakshya Patel 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 2 answers

    S N 7 years, 8 months ago

    It is used for treating wastewater consisting of sludge ,unwanted items, etc.

    0Thank You

    Amit Singh 7 years, 8 months ago

    We can use it in factories for cooling machines

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    • Posted by Almas Tanzeel 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Jasveen Kaur Saluja Saluja 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Lakshya Patel 7 years, 8 months ago

    It is a waste water pipe

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    • Posted by Mahendra Pratap 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Anand Mundada 7 years, 8 months ago

    Because the eartworm leaves a liquid known as mucus which increase ghe fertility of soil

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    • Posted by Nimi Kumari 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Diksha Sharma 7 years, 8 months ago

    GroupGroup of Race is called Bean

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    • Posted by Neha Rana 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Purav Khattar 7 years, 8 months ago

    zgyeudusu

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    • Posted by Owais Bhatt 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 1 answers

    S N 7 years, 8 months ago

    As it removes the excess water from the plant and provides a cooling effect to the plant .

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    • Posted by Ronak Singh 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Amisha Ahuja 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Siya Mishra 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Rachit Gupta 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Mayank Rawate Mayank 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Adarsh Singh 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Varshini Murali 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Vaishnavi Poste 7 years, 8 months ago

    Kya

    0Thank You

    Arnav Pandey 7 years, 8 months ago

    क्या

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    • Posted by Harshit Negi 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Harshit Negi 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Karan Jha 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Neha Rana 7 years, 8 months ago

    Depletion of water table will cause drought and scanty rainfall

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    • Posted by Lucky Panghal 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Dibakar Gouda 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Goutham Krishna 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Vaishnavi Poste 7 years, 8 months ago

    The Clotting of blood

    1Thank You

    Tejas Khandelwal 7 years, 8 months ago

    The clotting of blood

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    • Posted by Jaanisha Singh 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Jagjeet Singh 7 years, 8 months ago

    Water cycle is the process in which water regularly is done in which first the water is evaporated and then the process in which the water is condensed by clouds and the rain fall begins and it comes to seas,ocean and river again and the process is continously is done.

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    • Posted by Abhishek Kumar 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Rohan Verma 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Vanshika Saxena 7 years, 8 months ago

    CBSE > Class 07 > Science
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    • Posted by Anisha Nair 7 years, 8 months ago

    CBSE > Class 07 > Science
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    logo Homepage CBSE Class 7 Important Questions for Science – Physical and Chemical Changes B.Tech Admission 2018. Apply Now! MU OET 2018 SRMJEEE 2018 By Anuj William - December 15, 2014 Class 7 Important Questions for Science – Physical and Chemical Changes NCERT Exemplar Class 7 Science is very important resource for students preparing for VII Board Examination. Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 7. Question from very important topics are covered by NCERT Exemplar Class 7. You also get idea about the type of questions and method to answer in your Class 7th examination. Here you can get Class 7 Important Questions Science based on NCERT Text book for Class VII. Science Class 7 Important Questions are very helpful to score high marks in board exams. Here we have covered Important Questions on Physical and Chemical Changes for Class 7 Science subject. Science Important Questions Class 7 are given below. Multiple Choice Questions Which of the following is a physical change? (a) Rusting of iron (b) Combustion of magnesium ribbon (c) Burning of candle (d) Melting of wax Which of the following is a chemical change? (a) Twinkling of stars (b) Cooking of vegetables (c) Cutting of fruits (d) Boiling of water A chemical change may involve – (a) change in colour only (b) change in temperature only (c) evolution of gas only (d) any or all of the above Which of the following is/are true when milk changes into curd? (i) Its state is changed from liquid to semi solid. (ii) It changes colour. (iii) It changes taste. (iv) The change cannot be reversed. Choose the correct option from below : (a) (i) and (ii) are correct (b) (ii) and (iii) are correct (c) (i), (iii) and (iv) are correct (d) (i) to (iv) are correct A man painted his main gate made up of iron, to (i) prevent it from rusting. (ii) protect it from sun. (iii) make it look beautiful. (iv) make it dust free. Which of the above statement(s) is/are correct? (a) (i) and (ii) (b) (ii) and (iii) (c) only (ii) (d) (i) and (iii) Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability? (a) It is more than 7 metres high. (b) It weighs about 6000 kg. (c) It was built more than 1600 years ago. (d) It has not rusted after such a long period. Galvanisation is a process used to prevent the rusting of which of the following? (a) Iron (b) Zinc (c) Aluminium (d) Copper Paheli’s mother made a concentrated sugar syrup by dissolving sugar in hot water. On cooling, crystals of sugar got separated. This indicates a – (a) physical change that can be reversed. (b) chemical change that can be reversed. (c) physical change that cannot be reversed. (d) chemical change that cannot be reversed. Which of the following statement is incorrect for a chemical reaction? (a) Heat may be given out but never absorbed. (b) Sound may be produced. (c) A colour change may take place. (d) A gas may be evolved. Two drops of dilute sulphuric acid were added to 1 g of copper sulphate powder and then small amount of hot water was added to dissolve it (step I). On cooling, beautiful blue coloured crystals got separated (step II). Step I and step II are: (a) physical and chemical changes respectively. (b) chemical and physical changes respectively. (c) both physical change. (d) both chemical change.

    • Posted by Anisha Nair 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Anisha Nair 7 years, 8 months ago

    Sry this question is sensed by mistake

    1Thank You

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