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Chemistry
1. The hybridization state of the C atom in butanoic acid is :
(1) sp2
(2) sp3
(3) both two (4) sp
2. Which of the subsequent isn’t an isomer of pentane :
(1) n-pentane
(2) 2, 2-dimethy 1 propane
(3) 2, 3-dimethyl 1 butane
(4) 2-methyl 1 butane
3. The oxidation state of the C atom in Ch2CI2 and CCI4 are respectively :
(1) -2 and – 4
(2) 0 and – 4 (3) 0 and 4
(4) 2 and 4
4. Which of the subsequent dissolves in ionic solvents :
(1) C6H5
(2) CH3OH (3) CCI4
(4) C5H12
5. The conjugate acid of HS is :
(1) S-2
(2) H2S2
(3) both two
(4) none
6. Phenolphthalein of pH range [8-10] is employed during which of the subsequent sort of titration as an appropriate indicator :
(1) NH4OH and HCI
(2) NH4OH and HCOOH
(3) NH4OH and C2H4O2
(4) NaOH and C2O4H2
7. Which of the subsequent is iron are :
(1) Malachite
(2) Hematite
(3) Siderite
(4) Limonite
8. The molarity of chloride ions within the resulting solution of 300 ml. of 3.0 M NaCI and 200 ml. of 4.0 M BaCl2 is going to be :
(1) 1.7 M
(2) 1.8 M
(3) 5.0 M
(4) 3.5 M
9. Which of the subsequent has the least bond energy :
(1) N2-2 (2) N2-
(3) N2+ (4) N2
10. Which of the subsequent species has the highest bond energy :
(1) O2-2 (2) O2+
(3) O2- (4) O2
11. Which of the subsequent compound isn’t aromatic :
(1) 1, 3-cyclobutene
(2) pyridine
(3) furane
(4) thiophene
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