(i) State ‘Le Chatelier’s principle’. (ii) Using Le Chatelier’s principle, predict the effect of increasing pressure on the following equilibrium. N2(g) + 3H2(g) ⇋ 2NH3(g) (h) (i) Describe the elements
B. (2/3)^2 C. 32 D. (3/4)^2 E.(1/3)^2 A quadratic equation with roots -3 and 5 is A.x2-15=0 B. x2-8x-15=0 C.x2+8x-15=0 D. x2+2x-15=0 E. x2-2x-15=0 A quadratic equation with solution set {1/3,1/4} is
1.Draw the following intervals. (a) {x/x > 2} (b) {x/x ≥ 3} (c) {x/x x ≤ -1} (d) {x/x>-1} (e){x/-2≤ x≤ 2} (f) {x/0≤x≤ 5} (g) {x/x≤0 or x.2} Draw a graph to show the solution set of each of the following.
. Vectors of ………. kinds may not be added. Only vector quantities of ………. kind may be added. If D ⃗ =-4C ⃗, the magnitude of D ⃗ is ………. than that of C ⃗. If A ⃗, B ⃗ and C ⃗ satisfy the equation A ⃗+B
. 28 C. 24 D. 48 E. 12 The area , in cm2 , of a circle has the same numerical value as the circumference, in cm, of the same circle. The radius , in cm, is A. 2 B. 1 C.2/π D.1/π E.1/2 An arc PQ subtends
) A body start s from rest and accelerates at 3 ms-2,for 4 s. Its velocity remains constant at the maximum value so reach 7 s and it finally come to rest with uniform negative acceleration after another
change in position along a certain direction is called ……… . Force is a ……… quantity. Mass is a …….. quantity. The combined effect of two (or) more vectors is called …….. . The vector sum of two vectors
{(x,y)/ x and y are positive integers and x + y = 7}.Write L by listing its elements. Exercise 1.2 1.Draw the following intervals. (a) {x/x > 2} (b) {x/x ≥ 3} (c) {x/x x ≤ -1} (d) {x/x>-1} (e){x/-2≤
) The molecule of (NH3, ClF3, BCl3) does not deviate octet rule. (c) The volume of the gas decreases (rapidly, slowly, regularly) with regular decrease of temperature. (d) The anhydrous sodium carbonate
The unit watt is the same as …… . The unit one joule per second is equivalent to ……… . The mechanical advantage of a machine depends on the ………. present. Mechanical advantage is the ratio of the …… to
A.(0,2) B.(2,0) C.(3,0) D.(0,3) E.(0,4) Which of the following points, lies on the line 2x+y=6? (1,4) 2.(0,6) 3.(2,0) A.1 only B. 2only C. 1and3 only D. 2and3 only E. 2 and 3 only PQRS is a rectangle with
The earth can be regarded as a ………. . 22.clock The age of universe is ……… s. 23.2 x 1018 24…….. is the language of physics. 24.Mathematics There are ……. seconds in one year. 25.3.17 x 107 The size of the
cm , is A. 2 B. 3 C.5 D. 48 E. 12 OAB is a sector of a circle with centre O, radius 8 cm and a perimeter 22 cm. Then the area of sector, in square cm is A. 6 B. 28 C. 24 D. 48 E. 12 The area , in cm2 ,
3+log_25=…….. A.log_240 B.log_24 C.log_2150 D. log_215 E.log_260 log0.01=……… A. 2 B. -2 C.1/2 D.-1/2 E.0 log_240+log_20.1+log_20.25=………. A. 0 B. 1 C.2 D. 3 E.4 log_2〖2√2〗=……… A. 2/3 B.1 C.1
The product of mass to velocity is ……… . (26) The acceleration due to the gravitational force is called acceleration due to ……… . (27) For free-fall motion, a body will fall onto the ground with constant
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
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 D.1-a E.1/2 a 12.If
(d) Hydrogen sulphide has weak ………. properties. (e) Halogens have essential electronic structure of ………. . (f) In the reaction with ammonia, boron trifluoride behave as an ………. . (g) The IUPAC name of
v.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
the smallest possible value of n(P∩Q) is A.5 B.2 C.3 D.7 E.8 20.Which of the following is (are) true? 1. {x\x2-5x+6=0}⊂{x\2≤x≤4} 2.{x/x is an even number}∩{x\x is an odd number} 3.A∪A´=S A.1 only B. 2
