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?
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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
Calcium (Ca) has atomic number 20 and mass number 40. Which of the following statements is not correct about Ca atom?
Electrophile in the case of chlorination of benzene in presence of FeCl₃ is
In which one of the following compounds carbon-carbon double bond length is maximum ?
The paramagentism of O₂ molecule is believed to be due of the presence of two electrons with parallel spins in :
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
What is the order of stability for
I.1-butene; II.cis-2-butene; III.trans-2-butene
The I.P. of sodium is 5.14eV. The I.P. of potassium could be
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
Which of the following compound is the most soluble in water?
Fischer-Tropsch process is used in manufacture of
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
Which of the following chemicals are used to manufacture methyl isocyanate that caused "Bhopal Tragedy " ?
(a) Methyl amine
(b) Phosgene
(c) Phosphine
(d) Dimethyl amine
The compound which can form intramolecular hydrogen bond is
Low reactivity of vinyl chloride and chlorobenzene is due to :
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?
Which of the following crystals does not exhibit Frenkel defect ?