MCQOPTIONS
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MCQOPTIONS
This section includes 856 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
PVC is obtained by the polymerisation of |
| A. | ropane |
| B. | inyl chloride |
| C. | tyrene |
| D. | cetylene |
| Answer» C. tyrene | |
| 452. |
A polymeric substance used to make parachute is |
| A. | ayon |
| B. | iscose |
| C. | otton |
| D. | erylene |
| Answer» C. otton | |
| 453. |
The name of plastic polymer from which combs, toys, bowls etc., can be made, is |
| A. | olyurethane |
| B. | olystyrene |
| C. | etallic polysulphides |
| D. | eflon |
| Answer» C. etallic polysulphides | |
| 454. |
The basic chemical building block of natural rubber obtained from trees is |
| A. | soprene |
| B. | inyl Chloride |
| C. | cetylene |
| D. | eoprene |
| Answer» B. inyl Chloride | |
| 455. |
Natural rubber is the polymer of : |
| A. | soprene |
| B. | tyrene |
| C. | utadiene |
| D. | thylene |
| Answer» B. tyrene | |
| 456. |
The polymerisation of which often following is used in manufacturing of polythene in industry ? |
| A. | ethane |
| B. | tyrene |
| C. | cetylene |
| D. | thylene |
| Answer» E. | |
| 457. |
The polymer used in making plastic crockery is |
| A. | ecron |
| B. | ylon |
| C. | akelite |
| D. | elamine |
| Answer» E. | |
| 458. |
Which of the following is not an addition polymer? |
| A. | ylon |
| B. | VC |
| C. | olythene |
| D. | olystyrene |
| Answer» B. VC | |
| 459. |
Bakelite is a co-polymer of Phenol and |
| A. | ormaldehyde |
| B. | cetaldehyde |
| C. | enzaldehyde |
| D. | innaldehyde |
| Answer» B. cetaldehyde | |
| 460. |
The buffer action of blood is due to the presence of |
| A. | CI and NaCI |
| B. | I– and [CO3]2– |
| C. | I– and [HCO3]– |
| D. | HCO3]– and H2CO3 |
| Answer» E. | |
| 461. |
The unit of ionic product of water (Kw) is : |
| A. | ol2 let-1 |
| B. | ol2 let-2 |
| C. | ol-1 let-2 |
| D. | ol-1 let-1 |
| Answer» C. ol-1 let-2 | |
| 462. |
Which of the following is not present in German silver? |
| A. | opper |
| B. | ickel |
| C. | ilver |
| D. | inc |
| Answer» D. inc | |
| 463. |
Brass gets discoloured in air due to constant exposure in presence of: |
| A. | luminium phosphide |
| B. | ydrogen sulphide |
| C. | ydrogenated wafers |
| D. | luminium sulphide |
| Answer» C. ydrogenated wafers | |
| 464. |
Ultra purification of a metal is done by : |
| A. | lugging |
| B. | one melting |
| C. | melting |
| D. | eaching |
| Answer» C. melting | |
| 465. |
Type metal used in printing press is an alloy of |
| A. | ead and copper |
| B. | ead and antimony |
| C. | ead and bismuth |
| D. | ead and zinc |
| Answer» C. ead and bismuth | |
| 466. |
The cathode of a lead storage battery is made up of |
| A. | inc |
| B. | ead |
| C. | ead oxide |
| D. | anganese dioxide |
| Answer» C. ead oxide | |
| 467. |
The deterioration of a metal by an electrochemical process is commonly termed as |
| A. | rosion |
| B. | orrosion |
| C. | assivation |
| D. | brasion |
| Answer» C. assivation | |
| 468. |
In the electroplating of gold, the electrolyte used is |
| A. | old chloride |
| B. | old nitrate |
| C. | old sulphate |
| D. | otassium aurocyanide |
| Answer» D. otassium aurocyanide | |
| 469. |
The degree of dissociation of an electrolyte depends on |
| A. | ilution |
| B. | mpurities |
| C. | tmospheric pressure |
| D. | ethod of dissolution |
| Answer» B. mpurities | |
| 470. |
German silver, an alloy, does not contain the metal |
| A. | ickel |
| B. | inc |
| C. | opper |
| D. | ilver |
| Answer» E. | |
| 471. |
Which of the following pairs of materials serves as electrodes in rechargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? |
| A. | ron and cadmium |
| B. | ickel and cadmium |
| C. | ead peroxide and lead |
| D. | inc and carbon |
| Answer» C. ead peroxide and lead | |
| 472. |
When a lead storage battery is discharged, |
| A. | O2 is evolved |
| B. | ead sulphate is consumed |
| C. | ead is formed |
| D. | ulphuric acid is consumed |
| Answer» E. | |
| 473. |
Soldering of two metals is possible because of the property of : |
| A. | iscosity |
| B. | smosis |
| C. | ohesion |
| D. | urface tension |
| Answer» D. urface tension | |
| 474. |
Which of the following substance is highly plastic ? |
| A. | uartz |
| B. | ica |
| C. | ranite |
| D. | lay |
| Answer» E. | |
| 475. |
Which of the following has the highest lattice energy? |
| A. | F |
| B. | sF |
| C. | aF |
| D. | bF |
| Answer» D. bF | |
| 476. |
Which of the following partially miscible liquid pairs has both lower and upper critical solution temperature? |
| A. | ater and Phenol |
| B. | niline and n-hexane |
| C. | lycerine and m-toluene |
| D. | ater and diethyl aniline |
| Answer» D. ater and diethyl aniline | |
| 477. |
Which one is the most dense liquid from the below? |
| A. | ater |
| B. | holoform |
| C. | asolin |
| D. | one of the above |
| Answer» C. asolin | |
| 478. |
A solution is |
| A. | homogeneous mixture of two or more substances |
| B. | solid dissolved in a liquid |
| C. | solid dissolved i water |
| D. | mixture of two liquids |
| Answer» B. solid dissolved in a liquid | |
| 479. |
Which of the following methods is used in determining the number average molar mass of a macromolecule? |
| A. | iscosity |
| B. | smotic pressure |
| C. | edimentation equilibrium |
| D. | ight scattering |
| Answer» C. edimentation equilibrium | |
| 480. |
What is used in storage batteries? |
| A. | opper |
| B. | in |
| C. | ead |
| D. | inc |
| Answer» D. inc | |
| 481. |
Peroxyacetyl nitrate is a |
| A. | cidic dye |
| B. | lant hormone |
| C. | itamin |
| D. | econdary pollutant |
| Answer» E. | |
| 482. |
Cyanide poisoning causes death in seconds because |
| A. | t denatures enzymes of the heart/muscle |
| B. | t breaks the electron transport chain |
| C. | t causes Lysis of red blood cells |
| D. | t causes cardiac arrest |
| Answer» E. | |
| 483. |
The major use of sulphur is in the manufacture of |
| A. | 2SO4 |
| B. | 2S |
| C. | O2 |
| D. | ungicide |
| Answer» B. 2S | |
| 484. |
The presence of ozone in the stratosphere is responsible for |
| A. | ncreasing the average global temperature in recent years |
| B. | igher rate of photosynthesis |
| C. | hecking the penetration of ultraviolet rays to the earth |
| D. | upplying oxygen for people travelling in jets |
| Answer» D. upplying oxygen for people travelling in jets | |
| 485. |
Ozone consists of |
| A. | xygen only |
| B. | xygen and Nitrogen |
| C. | ydrogen and Carbon |
| D. | xygen and Carbon |
| Answer» B. xygen and Nitrogen | |
| 486. |
Which one of the following is used to restore the colour of old oil paintings ? |
| A. | zone |
| B. | ydrogen peroxide |
| C. | arium peroxide |
| D. | odium peroxide |
| Answer» C. arium peroxide | |
| 487. |
In upper layer of atmosphere ozone is formed by |
| A. | he action of ultraviolet rays on oxygen |
| B. | he combination of oxygen molecules |
| C. | ubjecting oxygen to high pressure |
| D. | he action of nitrogen on oxygen in atmosphere |
| Answer» B. he combination of oxygen molecules | |
| 488. |
Sulphur dioxide bleaches colouring matter by : |
| A. | eduction |
| B. | ehydration |
| C. | ecomposition |
| D. | xidation |
| Answer» B. ehydration | |
| 489. |
Bleaching action of moist sulphur dioxide is because of its |
| A. | asic property |
| B. | cidic property |
| C. | xidising property |
| D. | educing property |
| Answer» D. educing property | |
| 490. |
If the equilibrium constants for the systems H2 + I2 -> 2HI and 2HI -> H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is : |
| A. | 1 = K2 |
| B. | 1 = 2K2 |
| C. | 1 = K2/2 |
| D. | 1= 1/K2 |
| Answer» E. | |
| 491. |
When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in |
| A. | aman spectra |
| B. | bsorption spectra |
| C. | mission spectra |
| D. | luorescence |
| Answer» D. luorescence | |
| 492. |
Which one of the following gases has the highest calorific value? |
| A. | atural gas |
| B. | ater gas |
| C. | oal gas |
| D. | ndane gas |
| Answer» E. | |
| 493. |
The heat value of combustion of Gasoline is |
| A. | 2600 kJ/kg |
| B. | 4600 kJ/kg |
| C. | 9400 kJ/kg |
| D. | 7000 kJ/kg |
| Answer» E. | |
| 494. |
Which colour is produce by Arsenic during flame test? |
| A. | reen |
| B. | ed |
| C. | rimson |
| D. | lue |
| Answer» E. | |
| 495. |
Silver nitrate solution is kept in brown bottles in laboratory because |
| A. | t reacts with ordinary white bottles |
| B. | rown bottles stops the passage of light through it |
| C. | rown bottles do not react with it |
| D. | rown bottles react with it |
| Answer» C. rown bottles do not react with it | |
| 496. |
What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ? |
| A. | here is a crackling sound |
| B. | here is a violent explosion. |
| C. | here is no reaction. |
| D. | he paper ignites |
| Answer» C. here is no reaction. | |
| 497. |
What is a Bakelite ? |
| A. | olution |
| B. | cid |
| C. | ase |
| D. | olymer |
| Answer» E. | |
| 498. |
What is Zeolite? |
| A. | ydrated Aluminosilicate |
| B. | ydrated Calcium Sulphate |
| C. | ehydrated Aluminosilicate |
| D. | ehydrated Calcium Sulphate |
| Answer» B. ydrated Calcium Sulphate | |
| 499. |
In which of the following ions , the colour is not due to d-d transition ? |
| A. | Ti(H2O)6]3+ |
| B. | CoF6]3+ |
| C. | CrO4]2− |
| D. | Cu(NH3)4]2+ |
| Answer» D. Cu(NH3)4]2+ | |
| 500. |
The heaviest naturally occurring element is: |
| A. | ercury |
| B. | olonium |
| C. | horium |
| D. | ranium |
| Answer» E. | |