Related InterviewSolutions

• During osmosis, flow of water through a semipermeable membrane is:A. from solution having higher concentration onlyB. from both sides of sides of semi-permeable membrane with equal flow ratesC. From both sides of semi-permeable membrane with unequal flow ratesD. from solution having lower concentration only
• Reduction potential for the following h alf-cell reaction are `Zn rarr Zn rarr Zn^(2+)+2e^(-),E_(Zn^(2+)//Zn)^(@) = -0.76V` `Fe rarr Fe^(2+)+2e^(-),E_(Fe^(2+)//Fe)^(@) = -0.44V` The emf for the cell reaction `Fe^(2+)Zn rarr Zn^(2+)+Fe` will beA. `+0.32`B. `-0.32V`C. `+1.20V`D. `-1.20V`
• A modulated carrier wave has maximum and minimum amplitudes of 800 m v and 200 m V. What is the percentage modulation?A. 0.2B. 0.8C. 1D. 1.25
• In an ac circuit `l=100 sin 200 pi t` . The time required for the current to achieve its peak value will beA. `(1)/(300)s`B. `(1)/(400)s`C. `(1)/(100)s`D. `(1)/(200)s`
• Two bodies `A and B` initially at rest are attrached towards each other due to gravitation. Given that `A` is much heavier than `B`. Which of the followings correctly describes the relative motion of the centre of mass of the bodies ?A. It moves towards AB. It moves towards BC. It moves perpendicular to the line joining the particlesD. It remains at rest w.r.t A as well as B.
• Light of wavelength `lamda` is incident on a slit of width d. the resulting diffraction pattern is observed on a screen at a distance D. the linear width of the principal maximum is, then equal to the width of the slit if D equalsA. `d/lamda`B. `(2lamda)/(d)`C. `(d^(2))/(2lamda)`D. `(2lamda^(2))/(d)`
• Compounds with antiseptic properties areA. `CHCl_(3)`B. `CHl_(3)`C. 0.3 ppm aqueous solution of `Cl_(2)`D. none of the above
• Which of the following are not used to convert RCHO into R `CH_(2)OH`?A. `H_(2)//Pd`B. `LiAlH_(4)`C. `NaBH_(4)`D. Reaction with RMgX followed by hydrolysis
• What products are obtained by the reaction of sodium with a mixture of 1-iodo-2-methyl propane and 2-iodo propaneA. 2,5-dimethyl hexaneB. 2,3-dimethyl butaneC. 2,4-dimethyl pentaneD. all of the above
• The graph between objecct distance u and image distance v for lens is givenn beow. The focal length of the lens is A. `5+-0.1`B. `5+-0.05`C. `0.5+-0.1`D. `0.5+-0.05`