The mean height of 6 boys is 4´2´´ . The mean height ot 4 girls is 3´9´´ .The mean height of combined 6 boys and 4 girls is A.4´1´´ B.4´ C. 3´11´´ D.3´10´´ E. 41/2´ For the sample 5,6,5,7,8,5,6,7,6,5 which

If P ⃗= 1/3 Q ⃗ , then the magnitude of P ⃗ is less than that of Q ⃗. Velocity vector v ⃗ and force F ⃗ may not be product. The new vectors obtain from sub-dividing a vector is called vectors components.

circles is A. 3:4 B. 4:5 C. 7:5 D. 6:5 E. 1:4 If x is 2/3 of y and y is 3/4 of z , then the ratio of z to x is A. 2:1 B. 1:1 C. 3:2 D. 1:2 E. 4:3 .If a2+2ka +16 is a perfect square , then k=….. A.-2 B.2

List A List B (a) Neutralization (i) it dissolves in noble metal gold (b) Alum (ii) CaO Cl2.2 H2O (c) Ammonium iron (II) sulphate (iii) show allotropy (d) Aqua-regia (iv) reaction between any acid and

.Choose the correct or the most appropriate answer for the following questions. Write only the letter of the correct answer. (10 marks ) (1) A bag contains x red balls and 2 blues. A ball is chosen at

Quantities that have only ………. are called scalars. A ……… has both magnitude and direction. The change in position along a certain direction is called ……… . Force is a ……… quantity. Mass is a …….. quantity.

Describe all the possible functions from A = {a,b,c} to B = {p,q} by drawing arrow diagram. Exercise 1.10 1.Make a table for the function x⟼x + 1 for the set { 0,1,2,3,4} to the set Z. Draw the graph.

M = {x/x is an integer , and -3<x<6} , N = the set of positive integers that are less than 8. Find M∩N. (3 marks) A = {x/x is a positive integer that is divisible by 3}, B = {x/x is a positive integer

Its true that a tortise win the rabbit in the race.

Fully aware of the new developments in the teaching ofhigh school chemistry and taking cognizance of the fact that some of the students will need to have professional orientations on completion, the authors

These developments have prompted major changes in the way chemistry is studied and taught throughout the world. This is reflected not only in the new chemistry course contents but also in the course

CHAPTER 1 .THE'LECT}ONIC STRæ'TtJRES OF ATOMSi PERIODIC TABLE AND C'"EMICAL BONDS 1•.1- Arrangement Of Fundak'tal Particles of Matter Fundamental Particles All matter is mådé of atoms'. turn, atoms

2HCI (a) lons are derived from atoms difier from them by having electrical charges. (7 ma SECTION (A) (Answer ALL questions) Some sodium hydroxide pelles are disolved in water, the beaker become hot, This

KEY CONCEPTSFORCHAPTER-8 REACTIVE METALS ( "mwfjyKvG,faom owåK)1. Reactive metal awGukd obm0rSm free awGY&ygov m;/Reactive metals are not found (rawGY&) free in nature.2. b, fv kdawGU&ov

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