| Question 1: For a given half cell, Al 3+ + 3e - → Al on increasing the concentration of aluminium ion, the electrode potential will |
Increase |
| Question 2: Match the following and select the correct option for the quantity of electricity, in Cmol-¹, required to deposit various metals at cathode. |
a-iii, b-iv, c-ii, d-i |
| Question 3: Catalysts are used to increase the rate of a chemical reaction. Because it |
Decreases the activation energy of the reaction |
| Question 4: Half-life of a first order reaction is 20 seconds and initial concentration of reactant is 0.2M. The concentration of reactant left after 80 seconds is |
0.0125 M |
| Question 5: In the given graph, E a for the reverse reaction will be |
125 KJ |
| Question 6: For the reaction 2N 2 O 5(g) → 4NO 2(g) + O 2(g) initial concentration of N 2 O 5 is 2.0 mol L -1 and after 300 min. it is reduced to 1:4 mol L -1 . The rate of production of NO 2 (in mol L -1 min -1 ) is |
4 * 10 -3 |
| Question 7: Which of the following methods of expressing concentration are unitless? |
Mole fraction and Mass percent (W/W) |
Question 8: Select the INCORRECT statement/s from the following:
(a) 22 books have infinite significant figures.
(b) In the answer of calculation 2.5 × 1.25 has four significant figures.
(c) Zero's preceding to first non-zero digit are significant.
(d) In the answer of calculation 12.11 + 18.0+ 1.012 has three significant figures |
(b) and (c) only |
Question 9: Given below are the atomic masses of the elements:
Which of the following doesn't form triad? |
Cl, K, Ca |
Question 10: The change in hybridisation (if any) of the 'Al' atom in the following reaction is
AlCl 3 + Cl - → AlCl - 4 |
sp 2 to sp 3 |
Question 11: Match List-I and List-II and select the correct option:
(a) NO - (i) 1.5
(b) CO - (ii) 2.0
(c) O - 2 - (iii) 2.5
(d) O 2 - (iv) 3.0 |
a-iii, b-iv, c-i, d-ii |
Question 12: The electronic configuration of X and Y are given below:
X: 1s 2 2s 2 2p 6 3s 2 3p 3
Y: 1s 2 2s 2 2p 6 3s 2 3p 5
Which of the following is the correct molecular formula and type of bond formed between X and Y? |
XY 3 , covalent bond |
| Question 13: Match List-I with List-II |
a-iii, b-iv, c-i, d-ii |
| Question 14: In the following pairs, the one in which both transition metal ions are colourless is |
Sc 3+ , Zn 2+ |
| Question 15: In the reaction between hydrogen sulphide and acidified permanganate solution, |
H 2 S is oxidised to S, MnO - 4 is reduced to Mn 2+ |
| Question 16: A member of the Lanthanoid series which is well known to exhibit +4 oxidation state is |
Cerium |
| Question 17: In which of the following pairs, both the elements do not have (n-1) d 10 ns 2 configuration? |
Ag, Cu |
| Question 18: A ligand which has two different donor atoms and either of the two ligates with the central metal atom/ion in the complex is called |
Ambidentate ligand |
Question 19: Which of the following statements are true about [NiCl¸] 2- ?
(a) The complex has tetrahedral geometry.
(b) Co-ordination number of Ni is 2 and oxidation state is +4.
(c) The complex is sp 3 hybridised
(d) It is a high spin complex.
(e) The complex is paramagnetic. |
a, c, d and e |
| Question 20: Which formula and its name combination is incorrect? |
[Co(NH 3 ) 5 , (CO 3 )]Cl, Pentaamine carbonylcobalt (III) chloride |
| Question 21: In the complex ion [Fe (C 2 O 4 ) 3 ] 3- , the Co-ordination number of Fe is |
6 |
| Question 22: Match List-I with List-II for the following reaction pattern. |
a-iii, b-i, c-ii, d-iv |
| Question 23: The correct sequence of α-amino acid, hormone, vitamin, carbohydrates respectively is |
Aspartic acid, Insulin, Ascorbic acid, rhamnose |
| Question 24: Which examples of carbohydrates exhibit α–link (α–glycosidic link) in their structure? |
Amylose and Amylopectin |
| Question 25: In the titration of potassium permanganate (KMnO 4 ) against Ferrous ammonium sulphate (FAS) solution, dilute sulphuric acid but not nitric acid is used to maintain acidic medium, because |
Nitric acid itself is an oxidising agent. |
| Question 26: The group reagent NH 4 Cl(s) and aqueous NH 3 will precipitate which of the following ions? |
Al 2+ |
| Question 27: In the preparation of sodium fusion extract, the purpose of fusing organic compound with a piece of sodium metal is to |
Convert the elements of the compound from covalent form to ionic form |
| Question 28: The sodium fusion extract is boiled with concentrated nitric acid while testing for halogens. By doing so, it |
decompasses Na 2 S and NaCN, if formed |
| Question 29: Which of the following is not an aromatic compound? |
Option 3 |
Question 30: The IUPAC name of the given organic compound is
HC ≡ C - CH = CH - CH = CH 2 |
Hexa - 1, 3 - dien - 5 - yne |
| Question 31: Among the following, identify the compound that is not an isomer of hexane. |
Option 2 |
| Question 32: The organic compound can be classified as... |
Benzyl halide |
| Question 33: Chlorobenzene reacts with bromine gas in the presence of Anhyd AlBr 3 , to yield p-Bromochlorobenzene. This reaction is classified as _______. |
Electrophilic substitution reaction |
| Question 34: The organometallic compound (CH 3 ) 3 CMgBr on reaction with D 2 O produces ______. |
(CH 3 ) 3 CD |
| Question 35: The major product formed when 1-Bromo-3-Chlorocyclobutane reacts with metallic sodium in dry ether is |
Option 1 |
| Question 36: Ethyl alcohol is heated with concentrated sulphuric acid at 413 K. The major product formed is |
C 2 H 2 - O - C 2 H 5 |
| Question 37: Phenol can be distiguished from propanol by using the reagent. |
Bromine water |
| Question 38: Match the following with their pKa values |
I-c, II-d, III-a, IV-b |
| Question 39: CH3-C-OCH3 |
Option 4 |
| Question 40: Oxidation of Toluene with chromyl chloride followed by hydrolysis gives Benzaldehyde. This reaction is known as ______. |
Etard Reaction |
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