2 Which among the following methods is not suitable for the preparation of alkyl chlorides ? A) Addition of HCl to alkene B) Treating alcohols with Lucas reagent C) By heating alochols with thionyl chloride D) Chlorination of alkanes in presence of sunlight
3 If concentration of reactant 'A' is increased by 10 times the rate of reaction becomes 100 times . what is the order of reaction. if rate law is rate = k[A]x ? A) 3 B) 2 C) 4 D) 1
4 How many electrons are involved in the reaction, when 0.40 F of electricity is passed through an electrolytic solution ? A) $6.642\times 10^{25}$ B) $1.505\times 10^{25}$ C) $6.022\times 10^{25}$ D) $2.4088\times 10^{25}$
5 Identify the tetradentate ligand from the following A) Triethylene tetramine B) Ethylene diamine tetracetato C) Dimethyl glyoximato D) Oxalato
6 An ideal gas expands isothermally and reversibly from 10m3 to 20m3 at 300 K, performing 5.187 kj of work on surrounding, calculate the number of moles of gas used A) 1.5 B) 1 C) 3 D) 2
7 Which of the following is obtained by catalytic oxidation of ammonia? A) $N_{2}O$ B) NO C) $HNO_{2}$ D) $NO_{2}$
8 Which of the following actinoids exhibits only +3 oxidation state? A) Lr (Z=103) B) U (Z=92) C) Th (Z=90) D) Pa (Z=91)
9 Identify compound 'B' in following series of reactions? Acetonitrile $\underrightarrow{Na/alcohol}$ A $\underrightarrow{NaNo_{2}/dil.HCl}$ B A) Ethyl amine B) Nitroethane C) Ethyl alcohol D) Ethyl chloride
10 An acyl chloride is hydrogenated over catalyst palladium on barium sulphate to form an aldehyde. This reaction is called as A) Wolff-Kishner reduction B) Etard reaction C) Rosenmund reduction D) Stephen reaction
11 The equilibrium constant for a reaction is 20. what is the value of $\triangle G^{0}$ at 300 K ? (R=8 x 10-3 kJ) A) 16.63 kJ/mol B) -5.527 kJ/mol C) -2.763 kJ/mol D) -1.663 kJ/mol E) None of these
12 An element crystallises in a bcc lattice with cell edge of 500 pm. The density of the element is 7.5 g cm-3. How many atoms are present in 300g of metal? A) $6.4\times 10 ^{23}$ atoms B) $12.8\times 10 ^{23}$ atoms C) $3.2\times 10 ^{23}$ atoms D) $1.6\times 10 ^{23}$ atoms
13 An element has a bcc structure with cell edge of 288 pm . The density of element is 7.2 g cm-3. what is the atomic mass of an element ? A) 25.89 B) 51.78 C) 77.68 D) 62.43
14 Which carbon atoms of $\alpha$- D- glucopyranose and $\beta $- D- fructofuranose respectively are linked together to form glycosidic linkage in sucrose ? A) C-2 of $\alpha$-D-glucopyranose and C-2 of $\beta $- D fructofuranose B) C-1 of $\alpha$-D-glucopyranose and C-2 of $\beta $- D fructofuranose C) C-1 of $\alpha$-D-glucopyranose and C-6 of $\beta $- D fructofuranose D) C-2 of $\alpha$-D-glucopyranose and C-3 of $\beta $- D fructofuranose ?
15 A first-order reaction is 25 % completed in 40 minutes. What is the rate constant k for the reaction? A) $\frac{2.303\times \log1.33}{40}$ B) $2.303\times \log\frac{4}{3}$ C) $\frac{2.303\times \log4}{40\times3}$ D) $\frac{2.303 }{40}\times\log \frac{1}{4}$
