MCQOPTIONS
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MCQOPTIONS
This section includes 1262 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
Effective volume is usually taken for ____________ ? |
| A. | 2 moles of gas |
| B. | 1 mole of gas |
| C. | 5 moles of gas |
| D. | 3moles of gas |
| Answer» C. 5 moles of gas | |
| 402. |
Quantum numbers are __________ ? |
| A. | Arithmetical values |
| B. | Numerical values |
| C. | Leometric values |
| D. | Logical values |
| Answer» C. Leometric values | |
| 403. |
Process used to separate insoluble particles from liquids is ___________ ? |
| A. | Drying |
| B. | Filtration |
| C. | Sieving |
| D. | Extraction |
| Answer» C. Sieving | |
| 404. |
The weight of a metal of equivalent of 12 which will give 0.475g of its chloride is_______? |
| A. | 0.12g |
| B. | 0.16g |
| C. | 0.18g |
| D. | 0.24g |
| Answer» D. 0.24g | |
| 405. |
Gypsum is______? |
| A. | CaSO4 |
| B. | CaSO4.1/2H2O |
| C. | CaSO4,2H2O |
| D. | CaSO4.3H2O |
| Answer» D. CaSO4.3H2O | |
| 406. |
The amount of Zinc (at. Wt=65) necessary to produce 224 ml of H2 by the reaction with an acid will be______? |
| A. | 0.065gm |
| B. | 0.65gm |
| C. | 6.5gm |
| D. | 7.5gm |
| Answer» E. | |
| 407. |
The systematic name of sucrose is_______? |
| A. | 1-α-D- glucopyranosyl-2-β-D-fructopyranoside |
| B. | 11-α-D-glucopyranosyl-2-β-D-fructofuranoside |
| C. | 1-α-D- glucofuranosyl-2-α-D- fructopyranoside |
| D. | 1-β- D- glucofuranosyl-2-α- D- fructofuranoside |
| Answer» B. 11-α-D-glucopyranosyl-2-β-D-fructofuranoside | |
| 408. |
Which of the following compounds is not soluble in HNO3___? |
| A. | CuS |
| B. | CdS |
| C. | PbS |
| D. | AgCl |
| Answer» E. | |
| 409. |
In borax bead test which compound is formed_________? |
| A. | Ortho burate |
| B. | Meta borate |
| C. | Double oxide |
| D. | Tetra borate |
| Answer» C. Double oxide | |
| 410. |
The hybridization of nitrogen atom in pyridine is_______? |
| A. | Sp |
| B. | Sp2 |
| C. | Sp3 |
| D. | It is not hybridized |
| Answer» C. Sp3 | |
| 411. |
Cassiterite is an ore of_______? |
| A. | Mn |
| B. | Ni |
| C. | Sb |
| D. | Sn |
| Answer» E. | |
| 412. |
How many isomeric aldoses are possible for the molecular formula C6H12O6? |
| A. | 2 |
| B. | 4 |
| C. | 7 |
| D. | 16 |
| Answer» E. | |
| 413. |
The type of hybridisation of boron in diborane is______? |
| A. | Sp- hybridisation |
| B. | Sp2- hybridisation |
| C. | Sp3- hybridisation |
| D. | Sp3d2- hybridisation |
| Answer» B. Sp2- hybridisation | |
| 414. |
Treatment of sucrose with conc. HNO3 gives__________? |
| A. | Nitrosucrose |
| B. | Glucose+ fructose |
| C. | Oxalic acid |
| D. | Laevulinic acid |
| Answer» B. Glucose+ fructose | |
| 415. |
Percentage of lead in lead pencil is________? |
| A. | Zero |
| B. | 20 |
| C. | 80 |
| D. | 70 |
| Answer» B. 20 | |
| 416. |
Which of the following shows electrical conduction_____? |
| A. | Potassium |
| B. | Graphite |
| C. | Diamond |
| D. | Sodium |
| Answer» C. Diamond | |
| 417. |
BeCl2 has the hybrid orbitaks of type_______? |
| A. | Sp2 |
| B. | Sp3 |
| C. | Sp |
| D. | dsp2 |
| Answer» D. dsp2 | |
| 418. |
Water molecule is________? |
| A. | V-shaped |
| B. | Angular |
| C. | Pyramidal |
| D. | Triangular planer |
| Answer» B. Angular | |
| 419. |
The number of lone pairs in XeOF4 is_________? |
| A. | O |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» C. 2 | |
| 420. |
Which set of quantum numbers is not allowed? |
| A. | n=2,l=1,m1=0,ms=+1/2 |
| B. | n=2,l=1,m1=-1,ms=+1/2 |
| C. | n=2,l=0,m1=0,ms=-1/2 |
| D. | n=2,l=2,m1=1,ms=-1/2 |
| Answer» E. | |
| 421. |
The reaction of Lucas reagent is the fastest with_________? |
| A. | (CH3)2CHOH |
| B. | CH3(CH2)OH |
| C. | CH3CH2OH |
| D. | (CH3)3COH |
| Answer» E. | |
| 422. |
I3( Tri-iodine) has shape_________? |
| A. | Trigonal bipyramidal |
| B. | Linear |
| C. | Square bipyramidal |
| D. | Both A and C |
| Answer» C. Square bipyramidal | |
| 423. |
In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________? |
| A. | CaO+ SiO2——> CaSiO3 |
| B. | 2FeS+3O2——–> 2Fe+ SO2 |
| C. | FeSiO3———> FeSiO3 |
| D. | Fe2O3+ 3CO——–> 2Fe+ 3CO2 |
| Answer» E. | |
| 424. |
Parke’s process is used in the extraction of________? |
| A. | Iron |
| B. | Sodium |
| C. | Silver |
| D. | Zinc |
| Answer» D. Zinc | |
| 425. |
The average salinity of sea water is________? |
| A. | 3% |
| B. | 3.5% |
| C. | 2.5% |
| D. | 2% |
| Answer» C. 2.5% | |
| 426. |
Basicity of orthophosphoric acid is________? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 427. |
The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:_______? |
| A. | Bromine |
| B. | Fluorine |
| C. | Chlorine |
| D. | Sulphur |
| Answer» E. | |
| 428. |
Marsh gas is_______? |
| A. | Nitrogen |
| B. | Ethane |
| C. | Methane |
| D. | Hydrogen |
| Answer» D. Hydrogen | |
| 429. |
What is the density ofargon gas at a temperature of 30°C and a pressure of 1.05 atm? |
| A. | 1.65 g/L |
| B. | 1.67 g/L |
| C. | 1.68 g/L |
| D. | None of the above |
| Answer» D. None of the above | |
| 430. |
Potassium Permanganate is used for purifying drinking water, because_________? |
| A. | It is a sterilising agent. |
| B. | It dissolves the impurities of water. |
| C. | It is a reducing agent. |
| D. | It is an oxidising agent. |
| Answer» E. | |
| 431. |
The energy of one mole of photons of radiation, whose frequency is 4×10 14 Hz, is ___________? |
| A. | 159.6kJ |
| B. | 135.5 KJ |
| C. | 110.5 KJ |
| D. | 80.4 KJ |
| Answer» B. 135.5 KJ | |
| 432. |
Find the PH of a 0.001 M solution of Nitric acid HNO3? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 433. |
The formula C6H5-CO-CH3 represents_______ ? |
| A. | Acetone |
| B. | Acetic acid |
| C. | Acetophenone |
| D. | Phenyl acetate |
| Answer» D. Phenyl acetate | |
| 434. |
The molecular formula for cholesterol is C27 H46 O. What are the degrees of unsaturation for this compound? |
| A. | 5 |
| B. | 6 |
| C. | 7 |
| D. | 8 |
| Answer» B. 6 | |
| 435. |
The O-O linkage is present in__________? |
| A. | H2S2O3 |
| B. | H2SO8 |
| C. | H2S4O6 |
| D. | H2 S2 O6 |
| Answer» C. H2S4O6 | |
| 436. |
Poisonous gas present in the exhaust fumes of a jet plane is__________? |
| A. | Flurocarbon |
| B. | Carbon monoxide |
| C. | Methane |
| D. | C2H2 |
| Answer» C. Methane | |
| 437. |
The relatively high energy of the gauche conformation of butane is primarily associated with_________? |
| A. | Angle strain |
| B. | Torsional strain |
| C. | Steric strain |
| D. | Orbital strain |
| Answer» D. Orbital strain | |
| 438. |
Ce58 is a member of__________? |
| A. | S-block |
| B. | P-block |
| C. | d-block |
| D. | f-block |
| Answer» E. | |
| 439. |
The molecules of which gas have highest speed? |
| A. | H₂ at -73°C |
| B. | CH₄ at 300K |
| C. | N₂ at 1,027°C |
| D. | O₂ at 0°C |
| Answer» B. CH₄ at 300K | |
| 440. |
A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound? |
| A. | C2H4 |
| B. | C3H6 |
| C. | C4H8 |
| D. | C5H10 |
| Answer» D. C5H10 | |
| 441. |
The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in__________? |
| A. | 1.8 gram of H₂O |
| B. | 12 moles of KMnO₄ |
| C. | 0.6N H₂SO₄ |
| D. | 4.6 gram of C₂H₅OH |
| Answer» C. 0.6N H₂SO₄ | |
| 442. |
The most appropriate method for separating a large quantity of a mixture of nonvolatile, nonpolar organic compounds would be__________? |
| A. | Distillation |
| B. | Extraction |
| C. | Gas chromatography |
| D. | Column chromatography |
| Answer» E. | |
| 443. |
Which of the following solvents would best facilitate an SN2 substitution reaction? |
| A. | Water |
| B. | Hexane |
| C. | Dimethylflormamide |
| D. | Ethanol |
| Answer» D. Ethanol | |
| 444. |
Which of the following phenomenon is considered responsible for Global Warming? |
| A. | Greenhouse effect |
| B. | Fire in coal mines |
| C. | Dry farming |
| D. | Monsoon |
| Answer» B. Fire in coal mines | |
| 445. |
The concept of telluric helix was developed by___________? |
| A. | Lother Meyer |
| B. | A.E de Chancourtois |
| C. | Newland |
| D. | Dobereiner |
| Answer» C. Newland | |
| 446. |
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is___________? |
| A. | Dalton’s law |
| B. | Gay Lussac’s law |
| C. | Henry’s law |
| D. | Raoult’s law |
| Answer» D. Raoult’s law | |
| 447. |
Which one of the following is a bridge element? |
| A. | Be |
| B. | Cl |
| C. | K |
| D. | P |
| Answer» B. Cl | |
| 448. |
Which group contains elements that exist as monoatomic molecule? |
| A. | 1 |
| B. | 2 |
| C. | 14 |
| D. | 18 |
| Answer» E. | |
| 449. |
Which of the following is most soluble on water? |
| A. | BaSO4 |
| B. | SrSO4 |
| C. | CaSO4 |
| D. | MgSO4 |
| Answer» E. | |
| 450. |
The common oxidation state of lanthanides is_________? |
| A. | +3 |
| B. | +2 |
| C. | +1 |
| D. | +4 |
| Answer» B. +2 | |