The osmotic pressure of equimolar solutions of BaCl2, NaCl and glucose will be in the order
A. Glucose > NaCl > BaCl2 B. BaCl2 > NaCl > Glucose C. NaCl > BaCl2 > Glucose D. NaCl... View Article
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A neutral divalent carbon species obtained by removal of two monovalent atoms from the same carbon is called a
A. Carbanion B. Carbene C. Carbocation D. Free radical Solution: (D) A neutral divalent carbon species obtained by the removal... View Article
To prepare a buffer of pH 8.26 amount of (NH4)2SO4 to be added to 500 mL of 0.01 M NH4OH solution is
A. 0.05 mole B. 0.025 mole C. 0.10 mole D. 0.005 mole Solution: (B) Let (NH4)2SO4 to be added to... View Article
The addition of HCl to alkene proceeds in two steps
The first step is the attack of H+ ion toportion which can be shown as; Solution: (ii) The arrow is... View Article
Which of the following is not a cumulated diene?
A. Hexa-1,2-diene B. Hexa-2,3-diene C. Penta-2,3-diene D. Penta-1,3-diene Solution: (D) Cumulated diene is (C = C = C)
The compound which has the highest lattice energy is
A. NaF B. NaCI C. NaBr D. NaI Solution: (A) If we look at the general rule: “going down in... View Article
Name the main commercial source of helium
The major commercial source of helium is natural gas which contains an average of 0.4% helium. Helium is also produced... View Article
Which is most easily dehydrohalogenated?
Solution: (A) When a stable product is formed that means dehydro halogenation becomes very easy.
How many gm of bromine will react with 21gm C3H6?
A. 80 B. 160 C. 240 D. 320 Solution: (A) ∵ 24 gms of propane reacts with 160 gms of... View Article
The heat of combustion of gaseous hydrocarbon C3H8 gas in terms of given data is
εC − HεO = OεC = OεO − HεC − C +x1 + x2 + x3 + x4 + x5... View Article
What will be the molar conductance ’Λ’, if resistivity is x for 0.1 N H2SO4?
A. Λ = x × 1000 / 0.1 B. Λ = 2 × 1000 / x × 0.1 C. Λ... View Article
CH3CH2COCl IUPAC name
A. Propanoyl Chloride B. Ethanoyl Chloride C. Acetyl Chloride D. Chloroethane Solution: (A) CH3CH2COCl has three carbon atoms in the... View Article
Oxidation number of iodine in IO3−, IO4−, KI and I2 respectively is _____
A. -2, -5, -1 ,0 B. +5, +7, -1 , 0 C. +2, +5, +1 , 0 C. -1, +1... View Article
The pH of a mixture of 0.01MHCl and 0.1MCH3COOH is approximately
A. 1 B. 2 C. 4 D. 7 Solution: (A) [H+] = 10−2 [OH−] = 10−1 [H+]f = 10−2 ×... View Article
Platinised asbestos is used as a catalyst in the manufacture of
A. HCl B. H2SO4 C. HNO3 D. None of the above Solution: (B) Platinised asbestos is used as a catalyst... View Article
Which of the following molecules can act as a nucleophile and an electrophile?
A. CH3NH2 B. CH3Cl C. CH3CN D. CH3OH Solution: (A) We will look at how CH3NH2 act as a nucleophile... View Article
Which among the following pairs of molecules can be distinguished by haloform reaction?
A. CH3CHO and CH3COCH3 B. CH3CHO and CH3CH2OH C. CH3OH and CH3CH2OH D. HCHO and CH3CHO Solution: (C and D)... View Article
Which one of the following halogen compounds is difficult to be hydrolysed by SN 1 mechanism?
A. Tertiary butyl chloride B. Isopropyl chloride C. Benzyl chloride D. Chlorobenzene E. Allyl chloride Solution: (D) The C−Cl bond... View Article
The number of helium atoms present in 320 amu helium is
Solution: (80) Number of atoms = Mass of substance / Atomic Mass Given, Mass of Helium = 320 amu Atomic... View Article
Which of the following complexes have the longest M-C bond length?
A. Mn(CO)6]+ B. Cr(CO)6] C. Fe(CO)5] D. V(CO)6]− Solution: (A) The electron density on metal is less in Mn(CO)6]+ so... View Article
