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.
| 1401. |
Bonding pairs of electrons in ammonia are |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» E. | |
| 1402. |
There is more stability in carbonate relative to its oxide and carbon dioxide with more positive |
| A. | polarisability |
| B. | enthalpy change |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1403. |
The colored compounds which are formed on addition of phenol to diazonium ion are called |
| A. | colored compounds |
| B. | azo dyes |
| C. | none |
| D. | aromatic compounds |
| Answer» C. none | |
| 1404. |
Salts of gold, silver and platinum are found in droplets falling from |
| A. | cathode |
| B. | anode |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1405. |
The calcium oxide reacts with water readily to make a solution which is weakly |
| A. | basic |
| B. | acidic |
| C. | none |
| D. | alkaline |
| Answer» E. | |
| 1406. |
Oxidation of hydrogen halides becomes easier going |
| A. | down the groups |
| B. | across the periods |
| C. | none |
| D. | both a and b |
| Answer» B. across the periods | |
| 1407. |
Which of these Period 3 element has lowest electronegativity? |
| A. | Al |
| B. | Na |
| C. | S |
| D. | P |
| Answer» C. S | |
| 1408. |
The formation of bond is usually |
| A. | endothermic |
| B. | exothermic |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1409. |
Spring balance is used to measure |
| A. | Time |
| B. | Mass |
| C. | acceleration |
| D. | Weight |
| Answer» E. | |
| 1410. |
If the position of functional group varies in each of its isomer then its is |
| A. | functional group isomerism |
| B. | position isomerism |
| C. | all of them |
| D. | chain isomerism |
| Answer» C. all of them | |
| 1411. |
A saturated solution of lead (II) contains 0.99g per 100 g of water, therefore it is regarded as |
| A. | unsaturated solution |
| B. | saturated solution |
| C. | soluble |
| D. | insoluble |
| Answer» E. | |
| 1412. |
The process of heat transfer that involves continual emission of infrared waves from the surface of bodies and transmission of these waves without the aid of the medium is known as |
| A. | Convection |
| B. | Conduction |
| C. | None of the above |
| D. | Radiation |
| Answer» E. | |
| 1413. |
The number of positive ions balances the number of negative charges so as to neutralize the compound and gives the charge |
| A. | unit |
| B. | one |
| C. | negative |
| D. | zero |
| Answer» E. | |
| 1414. |
Bubbles are formed in the liquid during |
| A. | evaporation |
| B. | boiling |
| C. | melting |
| D. | vaporization |
| Answer» C. melting | |
| 1415. |
White solid oxides are produced by burning of group II metals in presence of |
| A. | carbon dioxide |
| B. | nitrogen |
| C. | helium |
| D. | oxygen |
| Answer» E. | |
| 1416. |
The kinetic component of internal energy is due to |
| A. | the intermolecular forces |
| B. | the vibration of matter |
| C. | the vibration of particles |
| D. | the collision of particles |
| Answer» D. the collision of particles | |
| 1417. |
Intermolecular forces include |
| A. | permanent dipole-dipole forces |
| B. | van der Wall's forces |
| C. | All of Above |
| D. | hydrogen bonds |
| Answer» D. hydrogen bonds | |
| 1418. |
Shape and bond angles is not dependent upon |
| A. | number of binding pairs |
| B. | number of lone electron pairs |
| C. | number of electrons in the valence shells |
| D. | total number of electrons around an atom |
| Answer» E. | |
| 1419. |
Molecular solids needs very lower temperature to break weak |
| A. | dipole-forces |
| B. | intermolecular forces |
| C. | All of Above |
| D. | hydrogen bonding |
| Answer» C. All of Above | |
| 1420. |
In equilibrium state the backward and forward reactions take place at |
| A. | simultaneously |
| B. | same time |
| C. | All of Above |
| D. | one time |
| Answer» D. one time | |
| 1421. |
Going down the group there is an increase in |
| A. | boiling point |
| B. | melting point |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1422. |
Hydrocarbons contain |
| A. | hydrogen |
| B. | carbon |
| C. | oxygen |
| D. | both a and b |
| Answer» E. | |
| 1423. |
The oxidation number of Al in Al |
| A. | +2 |
| B. | +1 |
| C. | +4 |
| D. | +3 |
| Answer» E. | |
| 1424. |
For dative covalent bonding, one atom having a lone pair of electrons combines with |
| A. | an expanded octet |
| B. | an electron deficient compound |
| C. | both of these |
| D. | None of Above |
| Answer» C. both of these | |
| 1425. |
The enthalpy changes which cannot be find by calorimeter can be find by the help of |
| A. | Hess's Law |
| B. | Newton's Law |
| C. | none |
| D. | Krebs's Law |
| Answer» B. Newton's Law | |
| 1426. |
The other measures of atomic radii are |
| A. | van der vaal's radii |
| B. | metallic radii |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1427. |
Most harmful effects of Acid Rain is on |
| A. | herbs |
| B. | aquatic plants |
| C. | All of Above |
| D. | trees |
| Answer» E. | |
| 1428. |
The direction of waves is perpendicular to the direction of vibration in |
| A. | longitudinal waves |
| B. | transverse waves |
| C. | none of the waves |
| D. | both transverse and longitudinal waves |
| Answer» C. none of the waves | |
| 1429. |
From the metals in a period, the neighboring members differ by |
| A. | multiple protons |
| B. | multiple neutrons |
| C. | All of Above |
| D. | multiple electrons |
| Answer» C. All of Above | |
| 1430. |
When small amount of acids or bases are added to zwitterion ion it resist change in |
| A. | volatility |
| B. | temperature |
| C. | pH |
| D. | polarity |
| Answer» D. polarity | |
| 1431. |
If we feel no cold or hot, we call it |
| A. | thermal constancy |
| B. | temperature constancy |
| C. | temperature equilibrium |
| D. | thermal equilibrium |
| Answer» E. | |
| 1432. |
Use of friction in breaking pads of cars is a |
| A. | negative effect of friction |
| B. | positive effect of friction |
| C. | combined effect (positive and negative both) |
| D. | neutral effect |
| Answer» C. combined effect (positive and negative both) | |
| 1433. |
Lattice energy becomes more exothermic if the size on ion is |
| A. | lowered |
| B. | increased |
| C. | stable |
| D. | decreased |
| Answer» C. stable | |
| 1434. |
The strength of the bond is determined by amount of overlap of |
| A. | orbital |
| B. | orbit |
| C. | lobes |
| D. | axis |
| Answer» B. orbit | |
| 1435. |
For yet undiscovered elements Periodic table has |
| A. | groups |
| B. | columns |
| C. | gaps |
| D. | rows |
| Answer» D. rows | |
| 1436. |
Lattice energy is inversely proportional to sum of radii of |
| A. | cation |
| B. | anion |
| C. | ions |
| D. | both a and b |
| Answer» E. | |
| 1437. |
The symbol for time is |
| A. | v |
| B. | d |
| C. | s |
| D. | t |
| Answer» E. | |
| 1438. |
The attraction of water molecules to the ions on surface of ionic solid is termed as |
| A. | dipole interaction |
| B. | ion-dipole attractions |
| C. | ion-attraction |
| D. | dipole reaction |
| Answer» C. ion-attraction | |
| 1439. |
A mobile phone has a mass of 100g. Find its weight if g is 10 N kg |
| A. | 90 N |
| B. | 1 N |
| C. | 10 N |
| D. | 1000 N |
| Answer» C. 10 N | |
| 1440. |
Solids are |
| A. | very little compressible |
| B. | very compressible |
| C. | B and C both |
| D. | incompressible |
| Answer» E. | |
| 1441. |
How hot or cold is an object is referred to |
| A. | Heat |
| B. | Temperature |
| C. | Pressure |
| D. | Cold |
| Answer» C. Pressure | |
| 1442. |
If the pressure is decreased the rate of evaporation would |
| A. | decrease |
| B. | increase |
| C. | vary |
| D. | remain same |
| Answer» C. vary | |
| 1443. |
The silver ions Ag+ act as |
| A. | oxidizing agent |
| B. | reducing agent |
| C. | none |
| D. | both a and b |
| Answer» B. reducing agent | |
| 1444. |
67*10-27kg is the weight of single atom of |
| A. | nitrogen |
| B. | oxygen |
| C. | water |
| D. | hydrogen |
| Answer» E. | |
| 1445. |
Ether has the boiling point of |
| A. | 25 °C |
| B. | 15 °C |
| C. | 45 °C |
| D. | 35 °C |
| Answer» E. | |
| 1446. |
The color of Iodine (I |
| A. | black (s) |
| B. | grey |
| C. | All of Above |
| D. | purple (vapors) |
| Answer» D. purple (vapors) | |
| 1447. |
In magnesium oxide, the electronic configuration of oxygen is that of |
| A. | Helium (g) |
| B. | hydrogen (g) |
| C. | Argon (g) |
| D. | Neon (g) |
| Answer» E. | |
| 1448. |
Which of the given elements of Group IV act as insulators? |
| A. | Tin (Sn) |
| B. | Carbon(Diamond) |
| C. | Silicon (Si) |
| D. | Lead (Pb) |
| Answer» C. Silicon (Si) | |
| 1449. |
A molecule or ion with one or more lone pairs of electrons available to donate to a transition metal ion is called a |
| A. | ion |
| B. | ligand |
| C. | all of them |
| D. | dentate |
| Answer» C. all of them | |
| 1450. |
Boiling point of oxygen is |
| A. | −383 °C |
| B. | −483 °C |
| C. | −183 °:C |
| D. | −283 °:C |
| Answer» D. −283 °:C | |