Mixing of an acid or base with water result in decrease in the concentration of HO/OH per unit volume is called
A) hydration
B) dehydration
C) hydrolysis
D) dilution
1 Answers
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0.5 L of a saturated solution of `Ag_(2)CrO_(4)` is mixed with 0.5 L of `2 xx 10^(-6)` M `AgNO_(3)`. If concentration of `[CrO_(4)^(2-)]`after mixing
Correct Answer - 2028
2 Answers 1 views
A non-conducting sphere ofradius R has a positive charge which is distributed over its volume with density `rho= rho_(0)(1- (x)/(R))` per unit volume,
Correct Answer - `[(pirho_(0)^(2)R^(5))/(72 in_(0)) , (13pirho_(0)^(2)R^(5))/(630 in_(0))]`
2 Answers 1 views
Decrease in school fees may further result in higher ‘drop out’.
Increase in school fees may further result in higher ‘drop out’.
2 Answers 3 views
The radius of a sphere decreases from 10 cm to `9.9` cm. Find (i) approximate decrease in its volume. (ii) approximate decrease in its surface.
Correct Answer - `(i) 40 pi cm^(3) (ii) 8 pi cm^(2)`
2 Answers 1 views
Shiva can type `x` words per hour while Sreevias can type `y` words per hour. Shiva works for 5 hours per day and Sreenvias works for 7 hours per day.
Correct Answer - `5x + 7y ge 700`
2 Answers 1 views
When acid reacts with base it forms salt and water then the reaction is called
C) Neutralization
2 Answers 1 views
The compressibility of water is ‘o’ per unit atmospheric pressure. The decrease in its volume ‘V’ due to atmospheric pressure ‘P’ will be
Correct option is: (C) σPV
2 Answers 1 views
The coefficient of cubical expansion of a solid is the increase in volume per unit original volume at 0 °C per degree rise in _________.
Correct option is: (C) temperature
2 Answers 2 views
The concentration of cell sap in the root hairs is …………. than that of soil water concentration.
The concentration of cell sap in the root hairs is more than that of soil water.
2 Answers 1 views
If E is an electric field and vector B is the magnetic induction, then the energy flow per unit area per unit time in an electromagnetic
Correct option is: (A) \(\frac{1}{\mu_0}\) \(\overset\rightarrow{E}\times\overset\rightarrow{B}\)
2 Answers 8 views