Related InterviewSolutions

• Figure shows path of two projectiles A and B choose the correct options(s): Given `U_(x)`=Initial velocity along horizontal `U_(y)`=Initial velocity along y-axis. A. `(U_(x))_(A)gt(U_(x))_(B)`B. `((U_(y))/(U_(x)))_(A)lt((U_(y))/(U_(x)))_(B)`C. `(U_(y)U_(x))_(A)=(U_(y)U_(x))_(B)`D. `(U_(y))_(A)lt(U_(y))_(B)`
• If the speed of ball is 145 `km//h` and the perimeter of the ball is 22.4 cm along the seam and spin ratio of bumrah is 0.1 find angular speed approximately imparted to the ball:A. 1080 rpmB. 700 rpmC. 1800 rpmD. 532 rpm
• If r lt s lt p are in arithmetic progression, then both roots of the quadratic equation `(r+2s-3p)x^2+(s+2p-3r)x+(p+2r-3s)=0` areA. realB. positiveC. negativeD. rational
• Let `f(x)=Sigma_(i=1)^(n) (x-x_i)^2`, where `x_i` are real coefficients , then which of the following is/are incorrect ?A. f(x) attains its least value at `x=1/n underset(i=1)overset(n)Sigmax_i`B. f(x) attains its least value of `x=(x_1+2x_2+3x_3+.....+nx_n)/n`C. f(x) attains its least value of `x=n underset(i=1)overset(n)Sigmax_i`D. f(x) attains its least value at `x=underset(i=1)overset(n)Sigmax_i`
• If `A_(g)^(-)rarrA_(g)^(+2)+3e^(-), triangleH_(2)=550 kj//mol^(-1)` then EGE of A is `(in kj//mol^(-1))`A. -200B. -100C. -50D. -350
• Hydration energy of `A_(g)^(+2) "is" (in kJ//mol^(-1))`A. -250B. -150C. -100D. -50
• Calculate total charge present on 9.6 g of `SO_(1)^(-2)` ion?A. `1.927xx10^(4)C`B. `1.927xx1010^(-4)C`C. `1.204xx10^(4)C`D. `9.63xx10^(4)C`
• ` sum_(k=0)^5(1)/(sin[(K+1)theta]sin[(K+2)theta])` can be equal toA. `(cot2theta-cot7theta)/(sin theta)`B. `(tan2theta-tan7theta)/(sin2theta)`C. a positive numberD. a negative number
• If `x_(1),x_(2) "are two solutions of" X^(lnx^(2) )=e^(18) "then product of" X_(1)X_(2)` can be equal toA. `(sec^(2)theta+co s ec^(2)theta)/(sec^(2)theta.c os ec^(2)theta)`,(wherever defined)B. `(cot^(2)18^(@)-cvos^(2)18^(@))/(cost^(2)18^(@)cot^(2)18^(@))`C. `sec 0+sec((pi)/(5))+sec((2pi)/(5))+sec((3pi)/(5))+sec((4pi)/(5))`D. `2log6^(3).3^(log6^(3))^(-1)`
• which of the following statement `is//are` correct?A. Maximum number pof atom present in same plane in `BrF_(5)` are 5B. In `O(SiH_(3))_(2) p_(n)-d_(n)` back bonding is present while in `BF_(3) P_(n) -P_(n)` back bonding is presentC. Pyroxene chain silicate and 5 memebered cyclic silicate both have 2 number of corner shared per tetrahedron.D. Number o flone pair on central atom of `ICI_(4)^(ominus)` is 2