. In the circle O, diameter AB= 20 cm, and chord AC= 16 cm, OP ⊥AC, then OP=…… A. 8 cm B. 7cm C. 6cm D. 5 cm E. 4cm 2.The distance between the two parallel chords AB and CD is A. 4 cm B. 5cm C. 6 cm D.

Newton’s first law gives the idea of ……… . (2) By Newton’s second law , the acceleration is directly proportional to ……… . (3) Newton’s third law express the idea of ………. . (4) Action force and reaction

Fill in the blanks with the suitable word or words. (4 marks) (a) Condensation is the reverse process of _____ . (b) All metals except _____ are solids. (c) A solution is a _____ mixture. (d) Total energy

(b) (i) Define the electrical energy and the mechanical energy. (ii) Calculate the heat of combustion of butane gas (C4H10) if its heat of formation is -124 kJ mol-1.The Heats of formation of CO2 (g) and

1.Fill in the blanks. ( 4 marks) (a) The mass of an object is a measure of the amount of _____ in it. (b) The largest unit of length is the _____ . (c) The process of sub-dividing into two or more vectors

The standard of the number 5068 is ………. . 11.5.068 x 2103 12.Volume is the ………… quantity. 12.derived The unit of time in all system of measurement is the ………. . 13. kilogram The unit of mass in MKS system

. A = {2,3,5,6} and B = { 1,2,3,4,5,6}. Take the relation “is a factor of” from A to B. Draw an arrow diagram . Write down the set of ordered pairs which describe this relation. X = { 2,6,8} and Y = {1,3,5}.

Choose a suitable description (a) of (b) or (c) in set builder form for the following sets. (1) E ={ 2, 4, 6, 8} (a) E = { x/ x is an even integer less than 10 } (b) E = { x/ x is an even positive integer

GRADE 10 CHEMISTRY The Power of Wisdom Education Centre 4 hydroxideကုိ ဘာနည္းနဲ႔ စီးပြားျဖစ္အေျမာက္အမ်ားထုတ္လုပ္သလဲ။ Sodium hydroxide is produced commercially by the electrolysis of saturated sodium chloride

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SECTION (A) (Answer ALL questions) l. Write TRUE or FALSE for each of the following statements. (a) The alkali metals have lowest electron affnity. (b) The force acting on the unit area is the gas pressure.

(7 marks) Match each Ofthe items in List A with the appropriate items given in IÅt B. List B List A a reaction (i) reduces chlorine to hydrogen chloride (a) Heat liberated by (b) Sodium chloride (ii) arnmonia

TRUE or FALSE for each of the following statements. (7 marks) l. Write (a) Alkali metals have stable electronic structures. (b) A volume of gas contracts when cooled. (c) The accuracy of a volumetric analysis

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