A solution of camphor in alcohol in a tube 20cm long is found to effect a rotation of the plane of viberation of light passing is of `33^(@)`. What must be the indentify of camphor in `g//cm^(2)` in solution? The specific rotation of camphor is `+54^(@)`.
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Find the Cartesian equation of the plane passing through A(7, 8, 6) and parallel to the plane r.(6i + 8j + 7k) = 0
The cartesian equation of the plane \(\bar{r}.(6\hat{i} + 8\hat{j} + 7\hat{k}) = 0\) is 6x + 8y + 7z = 0 The required plane is parallel to it ∴ its cartesian equation is 6x...
2 Answers 1 views
An unknown alcohol is treated with the Lucas reagent to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest
Correct Answer - B Its `3^(@)` (Tertiary alcohol) which reacts fastest by `SN^(1)` mechanism.
2 Answers 1 views
On passing light from colloidal solution, the effect due to scattering of light is known as :
Correct Answer - B Scattering of light by colloidal particles is known as Tyndall sffect.
2 Answers 1 views
Find the equation of a plane passing through the points A(2,1,2) and B(4,-2,1) and perpendicular to plane `vec(r ).(hat(i)-2hat(k))=5`. Also, find the
Let P(x,y,z) be any point on the plane in which A(2,1,2) and B(4,-2,1) lie. `:. Vec(AP)` and `vec(AB)` lie on required plane. Also required plane is perpendicular to given plane...
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A square coil of 600 turns, each side 20cm, is placed with its plane inclined at `30^(@)` to a uniform magnetic field of `4.5xx10^(-4)Wbm^(-2)`, Find
Correct Answer - `5.4xx10^(-3) Wb`
2 Answers 192 views
A 22cm long tube containing 88cc of sugar produces an optical rotation of `9.9^(@)` when placed in a polarimeter. If the amount of sugar in the soluti
Correct Answer - `66^(@)//"decimetre g" cm^(-3)`
2 Answers 1 views
A 0.12kg of impure sugar is dissolved in water and solution is mad eupto `8xx10^(-4)m^(3)`. A length of 20cm of this solution causes a rotation of `15
Correct Answer - 0.853
2 Answers 1 views
A polarimeter tube of length 0.21m contains sugar solution of specific rotation 0.01 rad `m^(-1)kg^(-1)m^(3)` concentration. If the produced is `36^(@
Correct Answer - `299 kgm^(-3),18^(@)`
2 Answers 1 views
A narrow uniform glass tube contains air enclosed by 15 cm long thread of mercury. When the tube is vertical with open end uppermost, the air column i
Correct Answer - `75` cm of Hg
2 Answers 2 views
An open glass tube is immersed in mercury so that a length of `8 cm` of the tube projects above the mercury. The tube is then closed and raised throug
Correct Answer - `15.4 cm`
2 Answers 1 views