FIRST TERM HOLIDAY PROJECT FOR SS3 BLOCK LAYING 1.Draw floor plan of two bedroom flat and show the front elevation. PHYSICS 1(a). An object is placed in front of a concave mirror whose radius of curvature is 12cm. If the magnification of the image produced is 1.5, how far is the object from the mirror. (b). The reflection of a narrow beam of light incident normally on a plane mirror, falls on a metre ruled placed parallel to the mirror at a distance of 1.0m. Calculate the angle of rotation of the reflected beams is displayed 21.26cm along the metre rule when the mirror is rotated. ENGLISH LANGUAGE Write an article of 450 words suitable for publication in a national newspaper on the benefits that will be derived from the government showing interest in agricultural. TECHNICAL DRAWING Specifications for a building is given below. Use them to draw a structure from blinding to the wall plate across one section wall. Foundation – Blinding 100mm Strip foundation 1000mm GL Footing 675 X 225mm Block wall 225mm Floor level 150mm from ground level Hardcore 150mm Screed 20mm 2.Window Casement Window iron 1200 x 1200mm Window sill 1000 from ground level 3. Lentel 225 x225mm 4. Ceiling 3200mm from floor level Noggings 50 x50 cardboard Ceiling sheet 5.Roof – Wall plate 100 x 100mm Pitch 30 , Rafters 100x 50. Purlins 50 x50mm at 600mm centres Eaves projection 750mm Facia 225 x25mm Gable end, 450mm Strulfs 75mm x 50mm at 1000mm centres. CIVIC EDUCATON 1. Give reasons why the practice of constitutional democracy is relevant in our society. NOTE: All these should be done in your notebook. GOVERNMENT 1. Discuss military rule in Nigeria: i. from 1966-1975 ii. from 1975-1979 iii. from 1983-1985 iv. from 1985-1993 v. from 1993-1999 Emphasis should be on: i. definition ii. features iii. causes of military take over iv. consequences v. structures etc. NOTE :Project work should be done in your note book. CHEMISTRY 1a. Read nitrogen and its compounds and answer the following questions . i. show by diagram only the laboratory preparation of nitrogen from atmospheric air. ii. Draw a well labeled diagram for the laboratory preparation of a dry sample of ammonia. Write an equation for the reaction. Bi. Name two drying agents that can be used to dry ammonia gas in the laboratory. ii. Explain why concentrated H2SO4 cannot be used to dry ammonia gas. Ci. State 2 physical properties of ammonia. ii. write a balanced equation for the reaction between ammonia and [a] oxygen [b] copper [ii] oxide 2. In the industrial production of ammonia. [a] what name is given to the process? [b]state one source of each of the starting materials. [c] what are the operating temperature and pressure? 3.a give 3 uses of aqueous ammonia B[i] name two reagents for the laboratory preparation of trioxonitrate(v)acid B[ii ]why is all glass apparatus used in the laboratory preparation of trioxonitrate(v)acid ? c. write an equation in each case to show the behaviour of HNO3 as: (i) an acid (ii) an oxidizing agent (d) mention two uses of HNO3. MATHEMATICS 1a. find the value of i. 323/5 ii. 0.043/2 b. find the value of 2√𝑎 denominator B, when a=1.21x10-4 and b= 4.4x10-6,giving your answer in the form Ax10n where A is a number between 1 and 10 and n is a whole number. [c] find the range of values of x for which 13≥3x-23 where all the numbers are in base four. Give the result in base four. 2a. if 2x−3y 3x−2y =4 evaluate x2+y2 2xy . b. if t=√𝑥 − 𝑦,express x in terms of y and t. c. a tricycle has sides of length [x-y]cm, [x+y]cm nd 2√𝑥𝑦cm find out whether the tricycle is right-angled. 3. A sales man receives a basic salary of ₦750000 a year together with a commission of 6% of the value of goods sold and a car allowance of ₦45 per km. a. find the total amount he receives in a year in which he sells goods worth ₦9375 and travels 10000km. b. the next year he travels 12000km and receives a total of ₦2010000. Calculate the percentage increase in the value of goods sold. 4. for what values of x is the fraction I.hot defined ii. zero? X+13X−48 7+2X 𝑡 𝑠 b. given that c=n[ + ] 𝑘 25 i.make s the subject of the formula ii. find the value of s when c=6, n=8,t=1 and k=18. 5. A blue dice and red dice are rolled simultaneously. A two-digit number is formed by noting the outcomes:the blue dice giving the units digits eg 3 on the blue dice and 5 on the red dice give the two digits number 35. a. make a table showing all the possible outcomes b. what is the probability of obtaining a two two-digit number whichis i. greater than 30 ii. exactly divisible by 11. iii. prime? C. what is the probability of obtaining a two-digit number that is either a perfect square or exactly divisible by 7?. COMMERCE Write five (5) reasons for the existence of the wholesaler despite the fact that manufacturer deal directly with consumers and retailers ECONOMICS 1. Define National income 2. Explain methods of National income calculation 3. Explain the usefulness of National income computation