How many isomeric acyclic alcohols and ethers are possible for C₄H₈O?
Which of the following organic compounds exhibits positive Fehling test as well as Iodoform test?
Which of the following gas is formed when CaC₂ reacts with H₂O?
DNA has deoxyribose, a base and the third component is
Sodium borate on reaction with conc. H₂SO₄ and C₂H₅OH gives a compound 'A' which burns with a green edged flame. The compound 'A' is
Electrophile in the case of chlorination of benzene in presence of FeCl₃ is
Calcium (Ca) has atomic number 20 and mass number 40. Which of the following statements is not correct about Ca atom?
The paramagentism of O₂ molecule is believed to be due of the presence of two electrons with parallel spins in :
Which of the following is aromatic?
In which one of the following compounds carbon-carbon double bond length is maximum ?
Which salt can be produced by the reaction of carbon monoxide and caustic soda (NaOH)?
Heat of neutralisation of strong acid and strong base is -57.0 KJ .The amount of heat released when 0.5 mol of HNO₃ solution is added to 0.2 mol of NaOH solution is
Under what conditions of temperature and pressure the formation of atomic hydrogen from molecular hydrogen will be favoured
The effect of a catalyst, in a chemical reaction, is to change
Aspirin is a/an
Which of the following statement is true for ∆G?
What is the order of stability for
I.1-butene; II.cis-2-butene; III.trans-2-butene
At what temperature will the average speed of CH₄ molecules have the same value as O₂ has at 300 K
The equivalent conductance of NaCl, HCl and C₂H₅COONa at infinite dilution are 126.45, 426.16 and 91 ohm⁻1 cm2 respectively. The eq. conductance of C₂H₅COOH is
The I.P. of sodium is 5.14eV. The I.P. of potassium could be
The ionisation potential keep on decreasing regularly as we move down a group from one element to the other. Because on moving down the group the atomic size increases gradually due to the addition of one new principal energy shell at each succeeding element. As a result, the force of attraction by the nucleus for the valence electrons decreases and the shielding effect increases. Consequently, ionisation potential also decreases.
Fischer-Tropsch process is used in manufacture of
Which of the following compound is the most soluble in water?
Which one of the following pairs of compounds are functional isomers?
Half life of radioactive element is 100 yrs. The time in which it disintegrate 50% of its mass will be
The compound which can form intramolecular hydrogen bond is
Which of the following chemicals are used to manufacture methyl isocyanate that caused "Bhopal Tragedy " ?
(a) Methyl amine
(d) Dimethyl amine
A dibasic acid containing C, H and O was found to contain C = 26.7% and H = 2.2%. The vapour density of diethyl ester was found to be 73. What is Molecular formula of acid?
Low reactivity of vinyl chloride and chlorobenzene is due to :
Plexiglass (PMMA) is a polymer of
Which of the following crystals does not exhibit Frenkel defect ?
Oxidation number of C in C₆H₁₂O₆ is
10.6 g of a substance of molecular weight 106 was dissolved in 100 ml; 10 ml of this solution was pipetted out into a 1000 ml flask and made upto the mark with distilled water. The molarity of the resulting solution is
The densities of two gases are in the ratio of 1:16. The ratio of their rates of diffusion is
Which of the following law directly explains the law of conservative of mass?
Lyophilic sols are more stable than lyophobic sols because the particles