MCQOPTIONS
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MCQOPTIONS
This section includes 64577 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 2401. |
A very small amount of electrical conductivity is measurable in |
| A. | geranium |
| B. | silicon |
| C. | diamond |
| D. | both a and b |
| Answer» E. | |
| 2402. |
A wheelbarrow of mass 75 kg accelerates from rest and reaches the speed of 10 ms |
| A. | 375 N |
| B. | 150 N |
| C. | 3750 N |
| D. | 750 N |
| Answer» C. 3750 N | |
| 2403. |
A wooden trolley of mass 20 kg accelerates at 2 m⁄s |
| A. | 10N |
| B. | 1 N |
| C. | None of the above |
| D. | -10 N |
| Answer» B. 1 N | |
| 2404. |
Acyl chloride which do not undergo hydrolysis at all is |
| A. | iodobenzene |
| B. | chlorobenzene |
| C. | all of them |
| D. | fluorobenzene |
| Answer» C. all of them | |
| 2405. |
Phenol dissolves well in |
| A. | acids |
| B. | alkalis |
| C. | water |
| D. | bases |
| Answer» C. water | |
| 2406. |
Fireworks release energy in the form of |
| A. | light |
| B. | heat |
| C. | All of Above |
| D. | sound |
| Answer» D. sound | |
| 2407. |
To form sigma bonds in C |
| A. | 2 electrons |
| B. | 1 electron |
| C. | 4 electrons |
| D. | 3 electrons |
| Answer» E. | |
| 2408. |
A toxic gas which binds with human hemoglobin and inhibit oxygen binding to blood is |
| A. | carbondioxide |
| B. | oxygen |
| C. | nitrogen |
| D. | carbon monoxide |
| Answer» E. | |
| 2409. |
Amino acids become negatively charged in |
| A. | alkaline conditions |
| B. | acidic conditions |
| C. | when used in electrolysis |
| D. | the presence of enzymes |
| Answer» B. acidic conditions | |
| 2410. |
The scrubbers acts against unconverted SO |
| A. | accelerate it |
| B. | neutralize it |
| C. | all of them |
| D. | recycle it |
| Answer» C. all of them | |
| 2411. |
The ions containing sulfur and oxygen are called |
| A. | sulfates |
| B. | sulphides |
| C. | sulfuric acid |
| D. | sulphur dioxide |
| Answer» B. sulphides | |
| 2412. |
The effect of concentration of reagent on rate of reaction is determines |
| A. | concentration of products |
| B. | order of reaction |
| C. | none |
| D. | concentration of reactants |
| Answer» C. none | |
| 2413. |
Each chlorine free radical has tendency to destroy ozone molecules in amount |
| A. | trillion |
| B. | million |
| C. | none |
| D. | billion |
| Answer» C. none | |
| 2414. |
In order to satisfy the Principle of Moment for an object in equilibrium, one needs to make sure that |
| A. | Sum of clockwise moments about pivot > Sum of anti-clockwise moments about pivot |
| B. | Sum of horizontal forces = Sum of vertical forces = 0 |
| C. | Sum of clockwise moments about pivot = Sum of anti-clockwise moments about pivot |
| D. | Sum of clockwise moments about pivot < Sum of anti-clockwise moments about pivot |
| Answer» D. Sum of clockwise moments about pivot < Sum of anti-clockwise moments about pivot | |
| 2415. |
When the pivot is adjusted at 50 cm in a meter rule, the rule will |
| A. | fall |
| B. | be balanced |
| C. | turn slowly |
| D. | be unbalanced |
| Answer» C. turn slowly | |
| 2416. |
Ions have noble gas electronic configuration was suggested by |
| A. | Lewis |
| B. | Kossel |
| C. | Russell |
| D. | Newton |
| Answer» C. Russell | |
| 2417. |
The bond angle between ammonia molecule is equal to |
| A. | 101.5° |
| B. | 107.5° |
| C. | 104.5° |
| D. | 103.5° |
| Answer» C. 104.5° | |
| 2418. |
Going across Period 3, electrons get more |
| A. | electronegative |
| B. | neutral |
| C. | None of Above |
| D. | electropositive |
| Answer» B. neutral | |
| 2419. |
Nucleophilic substitution reaction takes place when Halogenoalkanes is added with aqueous solution of |
| A. | sodium mangnate |
| B. | sodium chloride |
| C. | all of them |
| D. | sodium hydroxide |
| Answer» E. | |
| 2420. |
In methane, the tetrahedral structure is due to |
| A. | bonds being pulled closer together |
| B. | bonds being pushed further apart |
| C. | equal repulsive forces of each bonded electron pair |
| D. | distorting the molecular structure |
| Answer» D. distorting the molecular structure | |
| 2421. |
CFCs stands for |
| A. | chloratefluratecarbons |
| B. | chlorofluorocarbons |
| C. | none |
| D. | chloridefluoridecarbons |
| Answer» C. none | |
| 2422. |
In gases the particles |
| A. | move randomly with limited space |
| B. | move randomly with unlimited space |
| C. | vibrate randomly with unlimited space |
| D. | vibrate at a fixed position |
| Answer» C. vibrate randomly with unlimited space | |
| 2423. |
In van der Walls' forces, forces of attraction are formed between |
| A. | π+ of dipole of one atom/molecule and π− of dipole of next atom/molecule |
| B. | σ+ of dipole of one atom/molecule and σ− of dipole of next atom/molecule |
| C. | All of Above |
| D. | δ+ of dipole of one atom/molecule and δ− of dipole of next atom/molecule |
| Answer» E. | |
| 2424. |
Enzymes are incredibly |
| A. | specific |
| B. | efficient |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 2425. |
The protection of earth from harmful rays of sun is done by |
| A. | UV rays |
| B. | ozone layer |
| C. | none |
| D. | stratosphere |
| Answer» C. none | |
| 2426. |
If the car tires are hot, the pressure of gas molecules in them would be |
| A. | low |
| B. | high |
| C. | may be high or low |
| D. | same as before heating |
| Answer» C. may be high or low | |
| 2427. |
Boron has one more proton than |
| A. | beryllium |
| B. | helium |
| C. | nitrogen |
| D. | carbon dioxide |
| Answer» B. helium | |
| 2428. |
Acceleration is a |
| A. | Vector quantity |
| B. | Scalar quantity |
| C. | Derived quantity |
| D. | Base quantity |
| Answer» C. Derived quantity | |
| 2429. |
The scientific definition of pH is the negative logarithm to base 10 of |
| A. | OH -ion concentration |
| B. | H+ ion concentration |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 2430. |
The double bonds between carbon atoms is due to overlapping of 2p orbitals forming |
| A. | pi bond |
| B. | sigma bond |
| C. | none |
| D. | both a and b |
| Answer» B. sigma bond | |
| 2431. |
Sound waves have |
| A. | Frequency and wavelength only |
| B. | Amplitude only |
| C. | Amplitude and wavelength only |
| D. | Amplitude, frequency and wavelength |
| Answer» E. | |
| 2432. |
When iron reacts with oxygen in the presence of water it produces |
| A. | gas |
| B. | oil |
| C. | acid |
| D. | rust |
| Answer» E. | |
| 2433. |
The Melting Point of which of these elements is lowest? |
| A. | Ca |
| B. | Be |
| C. | Mg |
| D. | Sr |
| Answer» E. | |
| 2434. |
The cooling pack which treat a sports injury is kneaded with water and |
| A. | calcium chloride crystals |
| B. | Ammonium chloride crystals |
| C. | none |
| D. | Ammonium dioxide crystals |
| Answer» C. none | |
| 2435. |
The formula for weight is |
| A. | W = mg, where m is mass and g is the gravitational pull |
| B. | W = mv, where m is mass and v is velocity |
| C. | W = da, where d is distance and a is acceleration |
| D. | W = vg, where v is velocity and g is the gravitational pull |
| Answer» B. W = mv, where m is mass and v is velocity | |
| 2436. |
Ammonia is very important |
| A. | alkaline gas |
| B. | compound of nitrogen |
| C. | all of them |
| D. | NH3 |
| Answer» D. NH3 | |
| 2437. |
The precision of micrometer screw gauge is |
| A. | 0.01 mm |
| B. | 0.1 cm |
| C. | 0.01 m |
| D. | 0.1 mm |
| Answer» B. 0.1 cm | |
| 2438. |
The boiling point of propane is °C |
| A. | −42 |
| B. | −43 |
| C. | −24 |
| D. | −40 |
| Answer» B. −43 | |
| 2439. |
Electromagnetic waves obey the law of |
| A. | reflection and refraction both |
| B. | refraction only |
| C. | momentum |
| D. | reflection only |
| Answer» B. refraction only | |
| 2440. |
Which option is incorrect? A bloom of algae |
| A. | blocks sunlight for aquatic life |
| B. | provides food for aquatic life |
| C. | no option is incorrect |
| D. | utilize oxygen in water leaving lesser oxygen for rest of water life |
| Answer» C. no option is incorrect | |
| 2441. |
Oxidation state +2 is obtained by losing 2 electrons from |
| A. | 4s |
| B. | 2s |
| C. | d |
| D. | 2p |
| Answer» B. 2s | |
| 2442. |
Product obtained from additional polymerization includes |
| A. | only polymer |
| B. | water |
| C. | polyamides |
| D. | polyesters |
| Answer» B. water | |
| 2443. |
The Greek alphabet for density is |
| A. | rho |
| B. | Π |
| C. | cos |
| D. | Ohms |
| Answer» B. Π | |
| 2444. |
Emits are vomit inducing substances which are added to |
| A. | gasoline |
| B. | propane |
| C. | methylated spirits |
| D. | ethanol |
| Answer» D. ethanol | |
| 2445. |
Under mild conditions tertiary alcohols give |
| A. | no reaction |
| B. | extreme reaction |
| C. | nothing |
| D. | mild reaction |
| Answer» B. extreme reaction | |
| 2446. |
Order of reaction can be identified by plotting graphs of |
| A. | concentration |
| B. | reaction |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 2447. |
The process of decomposition of a compound into its elements by the passage of electric current is called as |
| A. | electrolysis |
| B. | hydrolysis |
| C. | All of Above |
| D. | proteolysis |
| Answer» B. hydrolysis | |
| 2448. |
If two forces of 3 N acting on an object in opposite direction. The resultant force will be |
| A. | 3 N |
| B. | 6 N |
| C. | Zero |
| D. | 9 N |
| Answer» D. 9 N | |
| 2449. |
Ultra fast laser technique was first used by |
| A. | Fredrick Ostwald |
| B. | Ahmed Zewail |
| C. | Ahmed Farabi |
| D. | Bin-e-Alhaitham |
| Answer» C. Ahmed Farabi | |
| 2450. |
Bond energy refers to |
| A. | energy required to break a mole of a compound |
| B. | energy required to make a mole of a compound |
| C. | the energy required to carry out sublimation |
| D. | energy required to carry over the reaction |
| Answer» B. energy required to make a mole of a compound | |