From the following equation, identify oxidizing and reducing agents .Give reason for your answer. 2H2O + 2Br2 → O2 + 4HBr (f) Which elements (s) N or P or K is not suitable for seed bearing and for leaf
A. y^(1/2) B. y^(3/2) C.y^(5/4) D.y^(5/8) E.y^(7/8) x-2+y-2=…….. A.(x+y)-2 B. (xy)-2 C. (x2+y2)(xy)-2 D.x2+y2 E. (xy)(x+y)-2 20.If x4 =10, what is x6? A.10√10 B.100 C.100 √10 D.1000 E.1000√10 21.(0.1)3+
The vertices of a triangle ate the points A(-2,3), B( 5,-4) and C(1,8). Find the slope of each side and also the slope of median. The vertices of parallelogram are the points R(1,4), S(3,2), T(4,6), V(2,8).
The unit of time in all system of measurement is the ………. . 13. kilogram The unit of mass in MKS system is ……… . 14.kilogram 15.The universe has the ………. size. 15.largest 16.The unit slug is the unit of
A and B are two sets and numbers of elements ate as shown in the Venn diagram. Given that n(A) = n(B), calculate (a) x (b) n(A∪B) 2.A ,B and C are three sets and the number of elements are shown in the
Fill in the blanks. (4-marks) (1)The largest unit of length is the _______. (2)The weight of 60 kg mass on the moon is _____ N. (3)If a ball is thrown upward with a velocity of 20 ms-1 ,it will be caught
……….. fundamental forces. (13) The gravitational force is a ……… range force . (14) Weight has both magnitude and ………. . (15) The SI unit of weight is ……… . (16) Mass is a scalar quantity and its SI unit
. The magnitude of the resultant force of a 12 N pointing east and a force of 5 N pointing south is ……….. N. A vector of magnitude 100 units is inclined at angle 45° to the X-axis. The magnitude of X-component
The value of {[(2)^(-1) ]^(-1) }^(-1)is A.2 B.-2 C.-1/2 D.1/4 E.1/2 7.5(32 )/(5^3 )^2 =……. A.1 B.0 C.25 D.125 E.625 8.(-1)^(-1) +(-1)^0 =………. A. 2 B.1 C.0 D. -1 E.-2 Which of the following is (are) false?
B.-6 C.9 D.12 E.15 log_35× log_2527=…………. A.3/2 B.2/3 C.5/27 D.3/25 E. 5×27 10.If x=log_ba,y=log_cb,z=log_ac, then xyz=………… A. 0 B. 1 C.-1 D. abc E. a+b+c If log2=a, then =……. A.a^2 B.2.5a C.1+a
12.An arc BC subtends an angle of 144° at the centre O if a circle of radius 10 cm . Then the length of arc BC is A.25/2π B.25/2 π C.8/π D.π/8 E. 8π 13.If sin〖20°=x 〗then cos〖70°〗is A.x B.x^2-1 C. 1-x
m (e) Sulphur (v) dissociation constant of the indicator (f) Bleaching powder (vi) K2SO4. Al2(SO4)3.24 H2O (g) Kin (vii) (NH4)2 SO4.FeSO4.6H2O Define the following terms. (8 marks) (a) Electron affinity
iv) type of bond that is formed between A and B. (d) Write equations in words and symbols for the following reactions. (i) Dinitrogen oxide reacts with carbon. (ii) Concentrated nitric acid reacts with
) Is work a vector or scalar? Define “energy”. A wooden sphere of mass 0.15 kg is thrown with a velocity of 30 ms-1 .Find the kinetic energy of the sphere. (4-marks ) (b) Define “work” . Write down the
a body is moving with constant velocity , its acceleration is _____ . (10) _____ is the rate of change of velocity. (11) The velocity of a body is decreasing is has _____ acceleration. (12) The equation
Are the following statement True (or) False? (1) There are two types of motion. (2) Uniform motion is motion at constant speed. (3) Average velocity is a vector quantity. (4) Acceleration is a scalar quantity.
Select the correct word(s),notation(s), unit(s),etc given in the brackets. (7 marks) The atom without neutrons is ( hydrogen,helium,caesium). Boyle’s law can be expressed as ( v=1/p , pv=
A.12x2=7x+1 B.12x2=7x-1 C.12x2=x+1 D.12x2=x-1 E.12x2=1-x 1The nuclear force is a ……. range force. (20) The ratio of mass to volume is defined as ……… . (21) The density of ice is ……….. than that of water.
A.12x2=7x+1 B.12x2=7x-1 C.12x2=x+1 D.12x2=x-1 E.12x2=1-x The solution set of the system of equation x-y=3, x2-y2=21 is A.{(2,5)} B.{(5,2)} C. {5,2} D.{(2,5),(5,2)} E. None of these 14.The solution set
