Answer 7th question Identify the products formed when 1 mL of dil. Hydrochloric acid is added toIg of Sodium metal?2Write the chemical name and chemical formula of the salt used to removepermanent hardness of water.3Which of the following is not observed in a homologous series? Give reason1for your choice.a) Change in chemical propertiesb) Difference in -CH, and 14u molecular massc) Gradation in physical propertiesd) Same functional groupWhy does the Sun appcar white at noon?41Both a spherical mirror and a thin spherical lens have a focal length of (-)15cm. What type of mirror and lens are these?The image formed by a concave mirror is observed to be real, inverted andlarger than the object. Where is the object placed?6.1ORName the part of a lens through which a ray of light passes without sufferingany deviation.In the arrangement shown in figure there are two coils wound on a non-conducting cylindrical rod. Initially the key is not inserted in the circuit. Laterthe key is inserted and then removed shortly after.7CoilCoil !!니H ITWhat are the two observations that can be noted from the galvanometerreading?8Draw the magnetic field lines around a straight current carrying conductor.Two unequal resistances are connected in parallel. If you are not provided withany other parameters (eg. numerical values of I and R), what can be said aboutthe voltage drop across the two resistors?9ORSome work is done to move a charge Q from infinity to a point A in space. Thepotential of the point A is given as V. What is the work done to move thischarge from infinity in terms of Q and V?10Veins are thin walled and have valves. Justify.11How is the wall of small intestine adapted for performing the function ofabsorption of food?OROut of a goat and a tiger, which one will have a longer small intestine? Justifyvour answer.Explain how ozone being a deadly poison can still perform an essential12function for our environment.ORGive reason why a food chain cannot have more than four trophic levels.State the role of pancreas in digestion of food.13For question numbers 14, 15 and 16, two statements are given- one labeled Assertion (A) and theother labeled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c)and (d) as given below:a) Both A and R are true, and R is correct explanation of the assertion.

7 In the arrangement shown in figure there are two coils wound on a non- conducting cylindrical rod. Initially the key is not inserted in the circuit. Later the key is inserted and then removed shortly after. Coil I Coil ! What are the two observations that can be noted from the galvanometer reading?

7 In the arrangement shown in figure there are two coils wound on a non- conducting cylindrical rod. Initially the key is not inserted in the circuit. Later the key is inserted and then removed shortly after. Coil I Coil ! What are the two observations that can be noted from the galvanometer reading?

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter12: Chemical Bonding

Section: Chapter Questions

Problem 25E

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