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Draw Diagram for bonding in ethene with sp2 Hybridisation.

asked Oct 18, 2021 in Chapter 5: Chemical Bonding by Doubtly (98.9k points)

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Draw Lewis dot diagrams for the folowing a. Hydrogen (H2 ) b. Water (H2 O)

asked Oct 18, 2021 in Chapter 5: Chemical Bonding by Doubtly (98.9k points)

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asked Oct 18, 2021 in Uncategorized by Doubtly (98.9k points)

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What is a catalyst ? Write any one reaction which is brought about by use of catalyst ?

asked Oct 10, 2021 in Chapter 9: Carbon Compounds by Doubtly (98.9k points)

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What is meant by vinegar and gasohol? What are their uses ?

asked Oct 10, 2021 in Chapter 9: Carbon Compounds by Doubtly (98.9k points)

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Give names of three natural polymers. Write the place of their occurrance and names of monomers from which they are formed.

asked Oct 10, 2021 in Chapter 9: Carbon Compounds by Doubtly (98.9k points)

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Give names of three functional groups containing three different hetero atoms. Write name and structural formula of one example each.

asked Oct 10, 2021 in Chapter 9: Carbon Compounds by Doubtly (98.9k points)

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Give any four functional groups containing oxygen as the heteroatom in it. Write name and structural formula of one example each.

asked Oct 10, 2021 in Chapter 9: Carbon Compounds by Doubtly (98.9k points)

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Saturated hydrocarbons are classified into three types. Write these names giving one example each

asked Oct 10, 2021 in Chapter 9: Carbon Compounds by Doubtly (98.9k points)

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Write structural formulae for the following IUPAC names.

asked Oct 10, 2021 in Chapter 9: Carbon Compounds by Doubtly (98.9k points)

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Complete the following statement using every given options. During the extraction of aluminium..............

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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An object kept 60 cm from a lens gives a virtual image 20 cm in front of the lens.

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

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Three lenses having power 2, 2.5 and 1.7 D are kept touching in a row. What is the total power of the lens combination?

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

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5 cm high object is placed at a distance of 25 cm from a converging lens of focal length of 10 cm.

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

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4.A calorimeter has mass 100 g and specific heat 0.1 kcal/ kg °C. It contains 250 gm of liquid at 30°C having specific heat of 0.4 kcal/kg °C.

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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A thermally insulated pot has 150 g ice at temperature 0°C. How much steam of 100°C has to be mixed to it, so that water of temperature 50°C will be obtained?

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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Liquid ammonia is used in ice factory for making ice from water. If water at 20°C is to be converted into 2 kg ice at 0°C,

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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If vector a,b,c are three mutually perpendicular vectors equally inclined to vector a + b + c at angle θ, then find the value of 36 cos^2 2θ.

asked Aug 1, 2021 in 2021 by Doubtly (98.9k points)

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The mean of 6 numbers is 6.5 and its variance is 10.25. If 4 numbers are 2,4,5 and 7, then find the other two.

asked Aug 1, 2021 in 2021 by Doubtly (98.9k points)

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Benzene has vapor pressure of 70 torr and methyl benzene has 20 torr .

asked Jul 20, 2021 in 2021 by Doubtly (98.9k points)

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