Which of the following will not be soluble in sodium hydrogen carbonate ?
The reaction is as follows:
Acid + NaHCO3 Sodium salt of acid((soluble) + H2CO3
Among all the given compounds, o-nitrophenol is weaker acid than HCO3- Hence, it does not react with NaHCO3.
The segment of DNA which acts as the instrumental manual for the synthesis of protein is
The segment of DNA Which acts as the instrumental manual for the synthesis of the protein is a gene. Every protein in a cell has a corresponding gene.
Reaction of tert-butyl bromide with sodium methoxide produces
Isobutylene is obtained.
Thus, the reaction produces isobutylene.
A neutral atom (At. no. > 1) has
A carboxylic acid is converted into its anhydride using
The iso-electronic pair is
The geometric form of crystals is the result of orderly arrangement of
The rate of the reaction
is fastest when Z is
Just before attaining equilibrium by a reversible reaction, it is found that
For the reaction 2A + B → 3C + D. Which of the following does not express the reaction rate?
Which of the following favours the backward reaction in a chemical equilibrium?
Effect of temperature on rate of reaction given by
On Pauling scale which of the following does not have electronegativity ≥ 3.0
The additive used in composite propellants is
The heat of combustion of methane at 298K is expressed by CH4(g) + 2O2(g) → CO2(g) + 2H2O(l), ΔH = -890.2kJ. The magnitude of ΔE of the reaction at this temperature is
Which of the following electronic configuration corresponds to an inert gas?
As the electronic configuration of inert gases is ns2 np6 ,thus the element containing electronic configuration 1s22s22p6 , is an inert gas.
A neutral fertilizer among the following compounds is
The IUPAC name for
In hydrogen-oxygen fuel cell,combustion of hydrogen occurs to
At STP 1.12 litre of H2 is obtained on flowing a current for 965 seconds in a solution. The value of current is
1.12 L at N.T.P. = 1.12/22.4 mol = 0.05 mol
1 mol of H2 is obtained by passing electricity = 2 x 96500 C
0.05 mol of H2 is obtained by electricity = 2 x 96500 x 0.05
Now if I is current strength,
I x 965 = 2 x 96500 x 0.05 or I = 10 amp
An example of an oxide ore is
Alkali metals impart colour to Bunsen flame due to
The important oxide ore of iron is
Magnesium can be obtained by
A hydrocarbon reacts with hypochlorous acid to give 2-chloroethanol. The hydrocarbon is
...... test is used for detecting unsaturation in hydrocarbons
Heavy water is used in nuclear reactors as
What is the conjugate base of OH⁻?
A radioactive isotope decays at such a rate that after 96 minutes only 1/8 th of the original amount remains. The half-life of this nuclide in minutes is
The half life period of a radioactive element is 140 days. After 560 days, one gram of the element will deduce to
Ethyl bromide on treatment with alcoholic KOH gives
The isotope C-14 is
Which of the following is employed as Tranquilizer?
The first ionisation potential of Group 13 elements is lower than that of Group 2 elements, because
Which one of the following is a typical example of compound which exists as zwitter ion?
Aluminium chloride exists as
The liquified metal expanding on solidification is
Cellulose acetate is a
Pure N₂ gas is obtained from
C₂H₆(g) + nO₂ → CO₂ (g) + H₂O (l) In this equation, the ratio of the coefficients of Co₂ and H₂O is
Synthetic human hair wigs are made from a copolymer of vinyl chloride and acrylonitrile, and is called
How many grams of CH₃OH would have to be added to water to prepare 150 ml a solution that is 2.0 M CH₃OH ?
10 ml of conc. H₂SO₄ (10 molar) is diluted to 1 litre. The approximate strength of dilute acid could be
In which of the following 8 : 8 type of packing particles is present?
According to the kinetic theory of gases
All molecules of an ideal gas show random motion. They collide with each other and walls of container during which they lose or gain energy so they may not have same kinetic energy always.
The cause of Brownian movement is
Which of the following types of metals make the most efficient catalysts?
Iron, once dipped in concentrated H₂SO₄, does not displace copper from copper sulphate solution, because
Zinc amd mercury do not show variable valency like d-block elements because