Recently Active Disucss Test Question Questions

Assertion Reasoning Type Statement 1: The roots of the equation given by | x3 x 1 | | a3 a 1 | = 0 | b3 b 1 | are a and b only Statement 2: The substition of x=a and x=b gives two same rows which means that the de ...

The length of the intercept of common tangent in 1st quadrant to the circle x2+y2=16 and the ellipse x2/25+y2/4=1, between the coordinate axes is ...

Domain of the definition of the function f(x)= sin-1(2x)+Ï€/6 for real valued x is ...

slope of the tangent of the parabola y2-4x=0 which is normal to the circle x2+y2-2x+4y+1=0 ...

The equation x2/(1-r) - y2/(1+r)=1 (r<-1) represents ...

The number of the roots of the equation sin2θ=cos3θ-1 in the interval [0,2π] is ...

The vertices of a triangle are A(-1,-7), B(5,1) and C(1,4). The equation of the bisector of the angle ABC is ...

. limx→0 xtan2x-2xtanx (1-cos4x)2 ...

. |1 x x | f(x)= |2x x(x-1) x(x+1) | |3x(x-1) x(x-1)(x-2) x(x+1)(x-1)| then f(5)= ...

Straight Objective type If in the expansion of (1+x)m(1-x)n, then coefficients of x and x2 are 3 and -6 respectively then n is ...

Assertion Reasoning type STATEMENT-I: The entropy of the universe is continuously increasing. STATEMENT-II: All naturally occurring processes are accompanied by increases in entropy. ...

The standard reduction potentials of of the elements A, B and C are 2.37 V, -1.85 V and -1.36 V respectively. The order of their reducing power is ...

An electron is moving with a kinetic energy of 4.55×10-25 Joules. What will be the de Broglie wavelength for this electron? ...

When copper is treated with a certain concentration of nitric acid, nitric oxide and nitrogen dioxide are liberated in equal volumes according to the equation, xCu+yHNO3→uCu(NO3)2+NO+NO2+vH2O then y is ...

Which of the following has the highest nucleophilicity? ...

Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO3 and conc. H2SO4. In the nitrating mixture, nitric acid acts as a ...

25 ml of 2N HCl. 50 ml of 4N HNO3 and x ml of 5M H2SO4 are mixed together and total volume is made up to 1 L with water. 50 ml of this acid mixture exactly neutralizes 25 ml of 1N Na2CO3 solution, then the value of x is ...

*Image* H+ >F Br2, CCl4 >C4H8Br2 (five products possible How many structures of F is possible? ...

NH3(g)+3Cl2(g)→NCl3(g)+3HCl(g) ΔH1=-55 kJ N2(g)+3H2(g)→2NH3(g)+24 kJ H2(g)+Cl2(g)→2HCl(g) ΔH3=36 kJ The heat of formation of NCl3(g) is ...

Straight Objective type Gaseous benzene reacts with hydrogen gas in presence of nickel catalyst to form gaseous cyclohexane according to the reaction: C6H6(g)+3H2(g)→C6H12(g) A mixture of C6H6 and excess H2, has a pressure ...

Now suppose m2 is kept at the centre O and angular velocity of table is reduced to 4 rad/s . Tension in the string is ...

What should be the minimum angular speed of the turn table so that the masses will slip from this position? ...

comprehension for ques 45-47 Two blocks of mass m1=10 kg and m2=5 kg connected to each other by a massless inextensible string of length 0.3 m, are placed along a diameter of turn table. The coefficient of friction be ...

Match the following (81) Mn2+ (a) Diamagnetic (82) Cu+ (b) Paramagnetic (83) Ni2+ (c) Coloured compounds (84) Cr3+ (d) Magnetic Moment=2.82 BM ...

What will be the molarity of solution with respect to OH-?(assume no loss in volume) ...

How long will it take to produce 1 kg of Cl2? ...

comprehension for ques 78-80 An aqueous solution of NaCl on electrolysis gives, H2(g), Cl2(g) and NaOH according to the reaction: 2Cl-+2H2O→2OH-+H2(g)+Cl2(g). A direct current of 25 ampere with current efficient of 62% is p ...

What is the slope of the graph plotted in this experiment? (Assume the change in length to be 10 mm) The units of the graph are in SI units! ...

What is the extension of the wire due to the additional mass? (Ans in mm) ...

comprehension for ques 48-50 We conduct an experiment on determination of young's modulus by Searle's method. The micrometer attached has a pitch of 1 mm. It has 100 divisions on the circular scale. On addition of add ...