1 What is the value of C-O-H bond angle in CH3- OH ? A) $107^{0}$ B) $108.9^{0}$ C) $109.5^{0}$ D) $110^{0}$
2 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
3 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) $2.4088\times 10^{25}$
4 Identify the tetradentate ligand from the following A) Triethylene tetramine B) Ethylene diamine tetracetato C) Dimethyl glyoximato D) Oxalato
5 Which of the following is not present in baking powder? A) Potassium hydrogen tartrate B) sodium hydrogen carbonate C) Starch D) sodium carbonate
6 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)
7 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
8 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
9 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
10 Which among the following compound is not optically active? A) 3-chloro-2-methyl pentane B) 3- chloropentane C) 2-chloropentane D) 2-chloro-3-methyl pentane
11 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
12 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 ?
13 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) $\frac{2.303 }{40}\times\log \frac{1}{4}$
14 For the reaction , $N_{2}(g)+3H_{2}\rightarrow2NH_{3}(g) ; \triangle H$ is equal to A) $\triangle U+2RT$ B) $\triangle U-RT$ C) $\triangle U-2RT$ D) $\triangle U+RT$
15 Identify the correct decreasing order of densities of d-block elements A) V > Cr > Fe > Ni B) Ni > Fe > Cr > V C) Fe > Ni > V > Cr D) Cr > Fe > V > Ni
