MCQOPTIONS
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MCQOPTIONS
This section includes 136 Mcqs, each offering curated multiple-choice questions to sharpen your Uncategorized topics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The chemical equivalent of MgSO4 salt is |
| A. | 10,000 |
| B. | 30,000 |
| C. | 50,000 |
| D. | 70,000 |
| Answer» E. | |
| 2. |
1 ppm = |
| A. | 0.07 0fr |
| B. | 0.70fr |
| C. | 0.10fr |
| D. | 0.010fr |
| Answer» D. 0.010fr | |
| 3. |
Estimation of hardness can be determined by types. |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 4. |
Total hardness of water can be determined by titrating the fixed volume of water against the standard solution. |
| A. | soap |
| B. | alkaline soap |
| C. | acidic soap |
| D. | alcoholic soap |
| Answer» E. | |
| 5. |
The operon encodes proteins involved in arabinose metabolism. |
| A. | arabcd |
| B. | araabd |
| C. | arabad |
| D. | aradba |
| Answer» D. aradba | |
| 6. |
The water which form lather directly with the soap is called |
| A. | hard water |
| B. | soft water |
| C. | partially hard water |
| D. | very hard water |
| Answer» C. partially hard water | |
| 7. |
The sodium soap will precipitate all the hardness causing ions into their respective |
| A. | carbonates |
| B. | bicarbonates |
| C. | stereates |
| D. | chlorides |
| Answer» D. chlorides | |
| 8. |
EDTA method is also called as |
| A. | complexometric titration |
| B. | complex titration |
| C. | complement titration |
| D. | complexion titration |
| Answer» B. complex titration | |
| 9. |
At PH=10, the metal dye complex has the colour |
| A. | wine red |
| B. | blue |
| C. | green |
| D. | pink |
| Answer» B. blue | |
| 10. |
The indicator used in the EDTA method is |
| A. | benzene |
| B. | phenopthalene |
| C. | ethylene diamine |
| D. | erichrome black t |
| Answer» E. | |
| 11. |
The change in colour is sharper at the PH of |
| A. | 5 |
| B. | 10 |
| C. | 15 |
| D. | 20 |
| Answer» C. 15 | |
| 12. |
To prepare EDTA solution grams of EDTA is dissolved in the one litre of water. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 13. |
The standard hard water is prepared such that each ml must contain mg of CaCO3. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 14. |
The buffer used in the EDTA solution must have the PH of |
| A. | 20 |
| B. | 15 |
| C. | 10 |
| D. | 5 |
| Answer» D. 5 | |
| 15. |
Water is mainly used in boilers for the generation of |
| A. | power |
| B. | electricity |
| C. | steam |
| D. | current |
| Answer» D. current | |
| 16. |
drops of indicator is used in the EDTA method. |
| A. | 1 to 2 drops |
| B. | 2 to 3 drops |
| C. | 2 to 4 drops |
| D. | 5 to 8 drops |
| Answer» B. 2 to 3 drops | |
| 17. |
A fuel will detonate less if it has |
| A. | higher self ignition temperature |
| B. | lower self ignition temperature |
| C. | proper self ignition temperature |
| D. | none of the mentioned |
| Answer» B. lower self ignition temperature | |
| 18. |
m3/h. Feed flow : 635 m3/h. |
| A. | 80% |
| B. | 85% |
| C. | 90% |
| D. | 75% |
| Answer» C. 90% | |
| 19. |
m2 |
| A. | 112 |
| B. | 115 |
| C. | 117 |
| D. | 120 |
| Answer» B. 115 | |
| 20. |
SO2 + O2 2SO3 |
| A. | chlorine |
| B. | nitrous oxide |
| C. | sulphur di oxide |
| D. | potassium chloride |
| Answer» C. sulphur di oxide | |
| 21. |
5 and C = 0.04. |
| A. | 0.050 |
| B. | 0.030 |
| C. | 0.040 |
| D. | 0.060 |
| Answer» D. 0.060 | |
| 22. |
+ 3H2 2NH3 |
| A. | zinc |
| B. | chlorine |
| C. | platinum |
| D. | water |
| Answer» D. water | |
| 23. |
O2 2H2O + O2 |
| A. | chlorine |
| B. | bromine |
| C. | platinum |
| D. | noble solutions |
| Answer» D. noble solutions | |
| 24. |
+ O2 2SO3 |
| A. | platinum |
| B. | bromine |
| C. | magnesium |
| D. | silver |
| Answer» B. bromine | |
| 25. |
C=12 |
| A. | 1 |
| B. | 0 |
| C. | 2 |
| D. | 10 |
| Answer» E. | |
| 26. |
atm Temperature: 1oC |
| A. | 0 |
| B. | 2 |
| C. | 1 |
| D. | 3 |
| Answer» D. 3 | |
| 27. |
= K + S] |
| A. | repressor |
| B. | inhibitor |
| C. | modulator |
| D. | regulator |
| Answer» C. modulator | |
| 28. |
Insolation is less |
| A. | when the sun is low |
| B. | when the sun right above head |
| C. | at night |
| D. | at sun rise |
| Answer» B. when the sun right above head | |
| 29. |
is easy in terms of storage. |
| A. | solid fuel |
| B. | liquid fuel |
| C. | gaseous fuel |
| D. | natural gas |
| Answer» B. liquid fuel | |
| 30. |
Boiling point of LPG is |
| A. | 546k |
| B. | 373k |
| C. | above room temperature |
| D. | below room temperature |
| Answer» E. | |
| 31. |
In a single component condensed system, if degree of freedom is zero, maximum number of phases that can co exist |
| A. | 2 |
| B. | 3 |
| C. | 0 |
| D. | 1 |
| Answer» B. 3 | |
| 32. |
Liquid phase exists for all compositions above region. |
| A. | eutectic region |
| B. | equilibrium region |
| C. | isometric region |
| D. | sublimation region |
| Answer» D. sublimation region | |
| 33. |
When the coal is completely burnt in air, then the maximum temperature reached is called |
| A. | calorific value of coal |
| B. | gross calorific value |
| C. | calorific intensity of coal |
| D. | net calorific value |
| Answer» D. net calorific value | |
| 34. |
The ash content in diesel oil should be not be more than |
| A. | 1% |
| B. | 5% |
| C. | 0.1% |
| D. | 0.01% |
| Answer» E. | |
| 35. |
In Langmuir s model of adsorption of a gas on a solid surface the mass of gas striking a given area of surface is to the pressure of the gas. |
| A. | proportional |
| B. | anti proportional |
| C. | independent |
| D. | none of the mentioned |
| Answer» B. anti proportional | |
| 36. |
With reference to a two component system, an isobar indicates |
| A. | a region where the temperature remains constant |
| B. | an area below phase end products remains |
| C. | an area above which only the liquid vapors remains |
| D. | a region where the composition lies in equilibrium |
| Answer» E. | |
| 37. |
With reference to a two component system, a vapor line indicates |
| A. | a region where the temperature and pressure remains stable |
| B. | a region where the solubility remains constant |
| C. | an area below which components do not mingle |
| D. | an area above which both the components mingle to form a single mixture |
| Answer» B. a region where the solubility remains constant | |
| 38. |
is the weight of residue obtained after burning a weighed amount of dry coal. |
| A. | ash |
| B. | volatile matter |
| C. | moisture |
| D. | carbon |
| Answer» B. volatile matter | |
| 39. |
Addition of gives stainless steels an austenitic structure. |
| A. | molybdenum |
| B. | carbon |
| C. | nickel |
| D. | vanadium |
| Answer» D. vanadium | |
| 40. |
Stainless steels with little carbon and no nickel are called |
| A. | ferritic stainless steel |
| B. | austenitic stainless steel |
| C. | martensitic stainless steel |
| D. | duplex stainless steel |
| Answer» B. austenitic stainless steel | |
| 41. |
Stainless steels with high strength, but low corrosion resistance are known as |
| A. | austenitic stainless steel |
| B. | ferritic stainless steel |
| C. | martensitic stainless steel |
| D. | duplex stainless steel |
| Answer» D. duplex stainless steel | |
| 42. |
Which of the following is not a type of oil- hardening steel? |
| A. | o1 |
| B. | o2 |
| C. | o6 |
| D. | o9 |
| Answer» E. | |
| 43. |
The low-carbon, high-alloyed steels which possess high strength and toughness are known as |
| A. | carbon steels |
| B. | alloy steels |
| C. | maraging steels |
| D. | stainless steels |
| Answer» D. stainless steels | |
| 44. |
1 ALLOYS: INTRODUCTION- DEFINITION- PROPERTIES OF ALLOYS- SIGNIFICANCE OF ALLOYING, FUNCTIONS AND EFFECT OF ALLOYING ELEMENTS |
| A. | low alloy steels |
| B. | hsla steels |
| C. | high alloy steels |
| D. | stainless steels |
| Answer» B. hsla steels | |
| 45. |
6 X 107 MW which is almost the same as the present day energy consumption. Wind energy can be utilized to run wind mill which in turn, is used to drive the generators. |
| A. | 20,000 mw |
| B. | 12,000 mw |
| C. | 140,000 mw |
| D. | 5000 mw |
| Answer» B. 12,000 mw | |
| 46. |
The gas molecules are held on solid surface by in physical adsorption. |
| A. | chemical forces |
| B. | gravitational forces |
| C. | electrostatic forces |
| D. | vander waal s forces |
| Answer» E. | |
| 47. |
Rate of combustion should be |
| A. | very rapid |
| B. | moderate |
| C. | slow |
| D. | very slow |
| Answer» C. slow | |
| 48. |
The detonation tendency in petrol engines for specified conditions of fuel rating, compression ratio, speed etc, can be controlled by having |
| A. | smaller cylinder bore |
| B. | bigger cylinder bore |
| C. | medium cylinder bore |
| D. | none of the mentioned |
| Answer» B. bigger cylinder bore | |
| 49. |
Expression of T7 promoter- lac operator hybrid requires |
| A. | t7 rna polymerase |
| B. | an inducer such as iptg |
| C. | both t7 rna polymerase and inducer such as iptg |
| D. | t7 dna polymerase |
| Answer» D. t7 dna polymerase | |
| 50. |
In proximate analysis of coal, %fixed carbon = |
| A. | 100 % (ash + volatile matter + moisture) |
| B. | 100 % (ash + moisture) |
| C. | 100 % (ash + moisture) + %volatile matter |
| D. | 100 % (moisture + volatile matter) |
| Answer» B. 100 % (ash + moisture) | |