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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.
| 2201. |
Number of electrons in valence shell of carbon is |
| A. | two |
| B. | one |
| C. | four |
| D. | three |
| Answer» D. three | |
| 2202. |
When an object is tilted slightly and it comes back without toppling, this state is termed as |
| A. | Stable equilibrium |
| B. | Unstable equilibrium |
| C. | Stability |
| D. | Neutral equilibrium |
| Answer» B. Unstable equilibrium | |
| 2203. |
Solubility of silver chloride ions is reduced by addition of Cl- |
| A. | moles |
| B. | ions |
| C. | atoms |
| D. | molecules |
| Answer» C. atoms | |
| 2204. |
Metal atoms usually lose electrons and form |
| A. | negative ions |
| B. | positive ions |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 2205. |
An aqueous solution of silver nitrate in excess ammonia called |
| A. | Tollen's reagent |
| B. | ammoniacal silver nitrate solution |
| C. | both a and b |
| D. | Fehling's solution |
| Answer» D. Fehling's solution | |
| 2206. |
Reduction is the decrease in |
| A. | charge |
| B. | oxidation number |
| C. | All of Above |
| D. | solubility |
| Answer» C. All of Above | |
| 2207. |
Other atoms in a molecules effects its |
| A. | bond energy |
| B. | enthalpy |
| C. | All of Above |
| D. | volume |
| Answer» B. enthalpy | |
| 2208. |
Electrons clouds are always moving hence creating temporary forces called |
| A. | dipole-induced-dipole interaction |
| B. | Van der vaal's forces |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 2209. |
The attractive forces between metal ions and delocalized electrons can be weaken or overcome by |
| A. | high temperature |
| B. | hammer |
| C. | All of Above |
| D. | water |
| Answer» B. hammer | |
| 2210. |
With respect to heat transfer through conduction, which one of the following inequalities place solids', 'liquids' and 'gases' in the right order? |
| A. | Solids < gases < liquids |
| B. | Solids < liquids < gases |
| C. | Solids > liquids > gases |
| D. | Solids > gases > liquids |
| Answer» D. Solids > gases > liquids | |
| 2211. |
The number of lobes in p orbital is |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 2212. |
Going down the group, the colors of the Halogens |
| A. | become darker |
| B. | become natural |
| C. | remain the same |
| D. | become lighter |
| Answer» B. become natural | |
| 2213. |
There is a decrease down the group in radius of |
| A. | ion |
| B. | atom |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 2214. |
When the speed remains constant, the velocity |
| A. | remain constant |
| B. | may change |
| C. | slightly increases |
| D. | must changes |
| Answer» C. slightly increases | |
| 2215. |
The reactions in which products cannot turn back into reactants are termed as |
| A. | reversible reaction |
| B. | irreversible reactions |
| C. | All of Above |
| D. | equilibrium reactions |
| Answer» C. All of Above | |
| 2216. |
A bus of mass 20000 kg accelerates from rest to 40 ms |
| A. | 19960 N |
| B. | 500 N |
| C. | 50 N |
| D. | 80000 N |
| Answer» E. | |
| 2217. |
Ion which carries two charges, positive and negative is called |
| A. | zwitterions ion |
| B. | azonium ion |
| C. | none |
| D. | both a and b |
| Answer» B. azonium ion | |
| 2218. |
Lone pair of electron to attack carbonyl carbon atom in Acyl chlorides is provided by |
| A. | amines |
| B. | amides |
| C. | nitrogen |
| D. | ammonia |
| Answer» B. amides | |
| 2219. |
The thermal energy through infrared waves is termed as |
| A. | Radiant heat |
| B. | Infra heat |
| C. | Vacuumed heat |
| D. | Electromagnetic heat |
| Answer» B. Infra heat | |
| 2220. |
Carbon in diamond form doesn't conduct electricity due to absence of |
| A. | delocalized electrons |
| B. | spectators electrons |
| C. | ions |
| D. | free electrons |
| Answer» B. spectators electrons | |
| 2221. |
The bond angles in ammonia NH |
| A. | 120° |
| B. | 107° |
| C. | 87.5° |
| D. | 109.5° |
| Answer» C. 87.5° | |
| 2222. |
The melting point of magnesium oxide is above |
| A. | 2800°C |
| B. | 2010°C |
| C. | 2011°C |
| D. | 2000°C |
| Answer» B. 2010°C | |
| 2223. |
An anion will be polarised if |
| A. | anion is large |
| B. | cations is small |
| C. | cation is large |
| D. | both a and b |
| Answer» E. | |
| 2224. |
Alcoholics who cant afford alcohol uses methylated spirit to satiate their desire and end up in getting |
| A. | death |
| B. | blindness |
| C. | lung cancer |
| D. | both a and b |
| Answer» E. | |
| 2225. |
If ketones are not oxidised then upon heating Fehling's solution remains |
| A. | blue |
| B. | white |
| C. | b and c |
| D. | unchanged |
| Answer» D. unchanged | |
| 2226. |
The systematic name of Sulpher trioxide is |
| A. | sulfur(IV) oxide |
| B. | sulfur(III) oxide |
| C. | None of Above |
| D. | sulfur(VI) oxide |
| Answer» E. | |
| 2227. |
The elements of group VII elements are called |
| A. | halogens |
| B. | noble gases |
| C. | alkalis |
| D. | metals |
| Answer» B. noble gases | |
| 2228. |
The continual emission of infrared waves from the surface of all bodies, transmitted without any aid or support of a medium is termed as |
| A. | Convection |
| B. | Conduction |
| C. | Conduction and convection |
| D. | Radiation |
| Answer» E. | |
| 2229. |
Double bonds, as compare to single bonds are |
| A. | longer |
| B. | shorter |
| C. | weaker |
| D. | stronger |
| Answer» C. weaker | |
| 2230. |
Aluminum oxide has the melting point of |
| A. | 2040 °C |
| B. | 2140 °C |
| C. | 4020 °C |
| D. | 2000 °C |
| Answer» B. 2140 °C | |
| 2231. |
The electronegativity of Cl is |
| A. | 1.2 |
| B. | 2.5 |
| C. | 3 |
| D. | 1.5 |
| Answer» D. 1.5 | |
| 2232. |
The -1.602*10-19 coulombs is the charge on single |
| A. | protons |
| B. | electrons are negatively charged |
| C. | none |
| D. | neutrons |
| Answer» C. none | |
| 2233. |
An acceptor or pair of electron is termed as |
| A. | electrophile |
| B. | nucleophile |
| C. | anion |
| D. | carbocation |
| Answer» B. nucleophile | |
| 2234. |
The bond angle of ClF |
| A. | 104.5° |
| B. | 109.5° |
| C. | 87.5° |
| D. | 120° |
| Answer» D. 120° | |
| 2235. |
When magnesium is burnt on Bunsen burner it gives of flame of color |
| A. | off white |
| B. | bright white |
| C. | ash white |
| D. | cream white |
| Answer» C. ash white | |
| 2236. |
Density is related to mass by |
| A. | m/v, where m is mass and v is volume |
| B. | v/m, where v is volume and m is mass |
| C. | m/a, where is mass and a is area |
| D. | a/m, where a is area and m is mass |
| Answer» B. v/m, where v is volume and m is mass | |
| 2237. |
The handle of soldering iron rod is made up of plastic because plastic is a |
| A. | good insulator of heat |
| B. | good conductor of heat |
| C. | good conductor of electricity |
| D. | bad insulator of heat |
| Answer» B. good conductor of heat | |
| 2238. |
Permanent dipole-dipole forces are present between two |
| A. | molecules |
| B. | atoms |
| C. | electrons |
| D. | orbits |
| Answer» B. atoms | |
| 2239. |
Silicon is classed as |
| A. | metalloid |
| B. | semi-metal |
| C. | non-metals |
| D. | both a and b |
| Answer» E. | |
| 2240. |
The pH of many body tissues is |
| A. | near 7 |
| B. | below 5 |
| C. | near 14 |
| D. | near 10 |
| Answer» B. below 5 | |
| 2241. |
Group II nitrates decompose to give off |
| A. | nitrogen dioxide |
| B. | oxide |
| C. | all of them |
| D. | oxygen |
| Answer» D. oxygen | |
| 2242. |
When the pendulum bob is released, the potential energy is converted into |
| A. | Electrical Energy |
| B. | Mechanical Energy |
| C. | Kinetic energy |
| D. | Thermal energy |
| Answer» D. Thermal energy | |
| 2243. |
In a human body the pH of blood is maintained between |
| A. | 7.1-8.1 |
| B. | 7.35-7.45 |
| C. | 7.53-8.53 |
| D. | 6.1-7.1 |
| Answer» C. 7.53-8.53 | |
| 2244. |
The problem of enhanced global warming is due to vast amount of CO |
| A. | 200 years |
| B. | 100 years |
| C. | 400 years |
| D. | 300 years |
| Answer» B. 100 years | |
| 2245. |
Air trapped inside a single-piston-cylinder exerts a pressure of 760 mmHg. If its volume is increased at a constant temperature such that the final the pressure is equal to 507 mmHg then increase in volume is equal to |
| A. | 0.3 |
| B. | 0.2 |
| C. | 0.5 |
| D. | 0.4 |
| Answer» D. 0.4 | |
| 2246. |
Formation of mirror on inside of tube during reaction is due to |
| A. | silver atoms |
| B. | silver ions |
| C. | silver nitrate |
| D. | silver compounds |
| Answer» B. silver ions | |
| 2247. |
The main important source of hydrocarbons is |
| A. | crude oil |
| B. | petrol |
| C. | petroleum |
| D. | copper |
| Answer» B. petrol | |
| 2248. |
Aluminum oxide does not react with |
| A. | water |
| B. | acids (conc.) |
| C. | any of these |
| D. | alkali (conc.) |
| Answer» B. acids (conc.) | |
| 2249. |
The oxidation number of Argon upon reaction with oxygen is |
| A. | +1 |
| B. | 0 |
| C. | +3 |
| D. | +2 |
| Answer» C. +3 | |
| 2250. |
Aluminum chloride is sometimes represented as |
| A. | AlCl2 |
| B. | AlCl3 |
| C. | none |
| D. | both a and b |
| Answer» C. none | |