MCQOPTIONS
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MCQOPTIONS
This section includes 376 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
The metal with the biggest metallic radii among the four is |
| A. | Ca |
| B. | Sr |
| C. | Be |
| D. | Ba |
| Answer» E. | |
| 302. |
As compared to Group I and II, the reactivity of Tin (Sn), a member of Group-IV is |
| A. | very high |
| B. | high |
| C. | low |
| D. | very low |
| Answer» D. very low | |
| 303. |
Sand and rocks further added to cement becomes |
| A. | concrete |
| B. | steel |
| C. | iron |
| D. | nickel |
| Answer» B. steel | |
| 304. |
Each halogen atom tends to gain 1e⁻ when it reacts with |
| A. | metal |
| B. | non-metal |
| C. | acid |
| D. | water |
| Answer» B. non-metal | |
| 305. |
MgCO₃ decomposes when heating with which of the following? |
| A. | CO |
| B. | CO₂ |
| C. | H₂CO₃ |
| D. | CO₃⁻² |
| Answer» C. H₂CO₃ | |
| 306. |
Primary alcohol is gently heated to produce aldehyde in presence of solution of acidified |
| A. | hydroxide |
| B. | dichromate |
| C. | ethanol |
| D. | none of above |
| Answer» C. ethanol | |
| 307. |
First non-crease fabrics were made by help of |
| A. | Terylene |
| B. | nylon |
| C. | caprolactum |
| D. | ethene |
| Answer» B. nylon | |
| 308. |
Halogen that has orange/brown color is |
| A. | F₂ |
| B. | Cl₂ |
| C. | Br₂ |
| D. | I₂ |
| Answer» D. I₂ | |
| 309. |
Sulfuric acid is manufactured with the help of |
| A. | Haber process |
| B. | Contact process |
| C. | Complex reaction |
| D. | Redox reaction |
| Answer» C. Complex reaction | |
| 310. |
Nylon is a very useful fiber used in clothing industry due to its |
| A. | elasticity |
| B. | strength |
| C. | low density |
| D. | all of above |
| Answer» E. | |
| 311. |
Oxidation of hydrogen halides (HF, HCl, HBr, HI) becomes |
| A. | easier down the group |
| B. | difficult down the group |
| C. | vigorous down the group |
| D. | tough down the group |
| Answer» B. difficult down the group | |
| 312. |
The attraction of higher nuclear charge is less than actual charge because of |
| A. | shielding effect |
| B. | distance between outermost electrons (e⁻) and nucleus (p⁺ and n⁰) |
| C. | intramolecular forces |
| D. | atomic radius |
| Answer» B. distance between outermost electrons (e⁻) and nucleus (p⁺ and n⁰) | |
| 313. |
Chlorine (Cl₂) is in gas form at |
| A. | room temperature |
| B. | high temperature |
| C. | low temperature |
| D. | equilibrium |
| Answer» B. high temperature | |
| 314. |
Iodoalkanes are the Nucleophilic substitution reactions which are |
| A. | fastest |
| B. | slowest |
| C. | continuous |
| D. | rapid |
| Answer» B. slowest | |
| 315. |
The highest melting point in Group-II elements is of |
| A. | Be |
| B. | Ba |
| C. | Ca |
| D. | Mg |
| Answer» B. Ba | |
| 316. |
Melting point of phenol is |
| A. | 55 °C |
| B. | 43 °C |
| C. | 25 °C |
| D. | 15 °C |
| Answer» C. 25 °C | |
| 317. |
CH₃COOC₂H₅ is the structural formula for |
| A. | ethyl ethanoate |
| B. | propane |
| C. | ethanoic acid |
| D. | methylamine |
| Answer» B. propane | |
| 318. |
In the Periodic table, the Alkaline earth metals are found in |
| A. | Period II |
| B. | Period III |
| C. | Group II |
| D. | Group III |
| Answer» D. Group III | |
| 319. |
Phenol undergoes ionization to become more stable by reacting with |
| A. | negative ions |
| B. | positive ions |
| C. | neutral atoms |
| D. | none of above |
| Answer» B. positive ions | |
| 320. |
Upon thermal decomposition, Ca(NO₃)₂ decomposes into |
| A. | NO |
| B. | NO₂ |
| C. | HNO₃ |
| D. | none of above |
| Answer» C. HNO₃ | |
| 321. |
Elements found in D-block of the periodic table are known as |
| A. | noble gases |
| B. | transition elements |
| C. | alkalis |
| D. | acids |
| Answer» C. alkalis | |
| 322. |
Cations are much smaller than their |
| A. | atoms |
| B. | molecules |
| C. | protons |
| D. | photons |
| Answer» B. molecules | |
| 323. |
Other than Carbon (C), Nitrogen (N₂), Oxygen (O₂), and Hydrogen (H₂), another element of a tree is |
| A. | Calcium |
| B. | Chromium |
| C. | Nickel |
| D. | Phosphorus |
| Answer» E. | |
| 324. |
Almond essence in cakes and pudding is made from |
| A. | ester |
| B. | alcohol |
| C. | benzaldehyde |
| D. | ketone |
| Answer» D. ketone | |
| 325. |
The melting point of chlorine is |
| A. | 172 |
| B. | 1683 |
| C. | 317 |
| D. | 371 |
| Answer» B. 1683 | |
| 326. |
When magnesium is burnt on Bunsen burner it gives flame of color |
| A. | bright white |
| B. | off white |
| C. | cream white |
| D. | ash white |
| Answer» B. off white | |
| 327. |
The density of Calcium (Ca) being the lowest in Group-II elements, the next element of lowest density is |
| A. | Ba |
| B. | Sr |
| C. | Be |
| D. | Mg |
| Answer» E. | |
| 328. |
As the size of the ion in Group IV elements increases, the |
| A. | bond energy increases |
| B. | melting point increases |
| C. | strength of metallic bond decreases |
| D. | none of above |
| Answer» D. none of above | |
| 329. |
The enthalpy changes which cannot be found by calorimeter can be found by the help of |
| A. | Newton's Law |
| B. | Hess's Law |
| C. | Krebs's Law |
| D. | Ohm's Law |
| Answer» C. Krebs's Law | |
| 330. |
With an increasing atomic number of Halogens, the |
| A. | Van der Waals forces decrease |
| B. | atomic radii increases |
| C. | color becomes lighter |
| D. | reactivity increases |
| Answer» C. color becomes lighter | |
| 331. |
D-block element forms one or more stable ions in the d-subshell which is |
| A. | complete |
| B. | incomplete |
| C. | partially complete |
| D. | whole |
| Answer» C. partially complete | |
| 332. |
In chlorination of water, reactive oxygen atoms are produced by |
| A. | Cl₂ + H₂O |
| B. | H₂CO₃ |
| C. | HClO |
| D. | H₂ClO₂ |
| Answer» D. H₂ClO₂ | |
| 333. |
One of the forms of calcium carbonate which is used to make expensive decoration tiles is |
| A. | limestone |
| B. | calcium chloride |
| C. | marble |
| D. | graphite |
| Answer» D. graphite | |
| 334. |
Organic compounds which contains halogens is |
| A. | ethyl chloride |
| B. | polyvinyl chloride |
| C. | poly Chloro ethene |
| D. | all of above |
| Answer» E. | |
| 335. |
Systemic name for PLA is |
| A. | 2-hydroxypropanoic acid |
| B. | hydroxy ester |
| C. | polyesters |
| D. | polyamides |
| Answer» B. hydroxy ester | |
| 336. |
After SnCl₄, the tetrachloride compound which has the highest boiling point is |
| A. | CCl₄ |
| B. | SiCl₄ |
| C. | GeCl₄ |
| D. | PbCl₄ |
| Answer» E. | |
| 337. |
The most reactive of all the non-metals in the periodic table is |
| A. | I |
| B. | Cl |
| C. | Br |
| D. | F |
| Answer» E. | |
| 338. |
MgO is used to line kilns and furnaces because of its |
| A. | ability to act as a reducing agent |
| B. | ability to neutralized excess acids |
| C. | high melting point |
| D. | greater metallic radius |
| Answer» D. greater metallic radius | |
| 339. |
When heating strontium, compounds give off flames of colors |
| A. | red |
| B. | green |
| C. | blue |
| D. | white |
| Answer» B. green | |
| 340. |
Halogens are present in group |
| A. | V |
| B. | VI |
| C. | VII |
| D. | II |
| Answer» D. II | |
| 341. |
The gas used to put the patient to sleep nowadays is called |
| A. | methane |
| B. | halothane |
| C. | halogenothane |
| D. | Halogenoalkanes |
| Answer» C. halogenothane | |
| 342. |
The systemic name for early anesthetic, chloroform is |
| A. | Trichloromethane |
| B. | dichloromethane |
| C. | tetra methane |
| D. | chlorate |
| Answer» B. dichloromethane | |
| 343. |
Alloys are a form of |
| A. | mixture |
| B. | compound |
| C. | metal |
| D. | transition metals |
| Answer» B. compound | |
| 344. |
Symbol of carbon is |
| A. | Ca |
| B. | C |
| C. | Cl |
| D. | Cr |
| Answer» C. Cl | |
| 345. |
Sn is symbol of |
| A. | Selenium |
| B. | Silicon |
| C. | Tin |
| D. | Lead |
| Answer» D. Lead | |
| 346. |
Symbol of iron is |
| A. | I |
| B. | Fe |
| C. | Ne |
| D. | Sn |
| Answer» C. Ne | |
| 347. |
Material is largely composed of |
| A. | metals |
| B. | organic matter |
| C. | atoms |
| D. | all of these |
| Answer» D. all of these | |
| 348. |
The -COOH is the functional group of |
| A. | ester |
| B. | carboxylic acids |
| C. | aldehydes |
| D. | ketone |
| Answer» C. aldehydes | |
| 349. |
All compounds consist of particular atoms in their molecules or group of atoms which is called as |
| A. | prominent group |
| B. | atom group |
| C. | functional group |
| D. | function group |
| Answer» D. function group | |
| 350. |
At temperatures above 1500 °C, hydrogen fluoride (HF) and hydrogen chloride (HCl) are |
| A. | decomposed |
| B. | not decomposed |
| C. | stable |
| D. | melt |
| Answer» C. stable | |