MCQOPTIONS
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MCQOPTIONS
This section includes 470 Mcqs, each offering curated multiple-choice questions to sharpen your 10th knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
Which is denatured spirit? |
| A. | ethanol only |
| B. | ethanol and methanol (50%) |
| C. | ethanol and methanol (5%) |
| D. | methanol only |
| Answer» D. methanol only | |
| 352. |
Which of the following is used to oxidise ethanol to ethanoic acid? |
| A. | Alkaline KMnO4 |
| B. | Conc. H2SO4 |
| C. | Acidified K2Cr2O7 |
| D. | All of above |
| Answer» E. | |
| 353. |
The isomeric pair is |
| A. | ethane and propane |
| B. | propane and butane |
| C. | ethane and ethane |
| D. | butane and 2-methyl propane |
| Answer» E. | |
| 354. |
The chemical formula of caustic potash is |
| A. | NaOH |
| B. | Ca(OH)2 |
| C. | NH4OH |
| D. | KOH |
| Answer» E. | |
| 355. |
Which of the following does not form an acidic salt? |
| A. | Phosphoric acid |
| B. | Carbonic acid |
| C. | Hydrochloric acid |
| D. | Sulphuric acid |
| Answer» C. Hydrochloric acid | |
| 356. |
The difference of molecules of water in gypsum and PoP is |
| A. | 5/2 |
| B. | 2b |
| C. | 3/2 |
| D. | ½ |
| Answer» D. ½ | |
| 357. |
The Ph of a solution of HCL is 4. This shows that the molarity of the solution is |
| A. | 4.0M |
| B. | 0.4M |
| C. | 0.0001M |
| D. | 0.001M |
| Answer» B. 0.4M | |
| 358. |
The function of quick lime in soda lime mixture is to |
| A. | Absorb moisture present in soda lime |
| B. | Increase the efficiency of soda lime |
| C. | Increase the pH of soda lime |
| D. | Take part in reaction with NaOH |
| Answer» B. Increase the efficiency of soda lime | |
| 359. |
Which of the following salts has no water of crystallization? |
| A. | Blue vitriol |
| B. | Washing soda |
| C. | Baking soda |
| D. | Gypsum |
| Answer» D. Gypsum | |
| 360. |
The nature of calcium phosphate is present in tooth enamel is |
| A. | Basic |
| B. | Amphoteric |
| C. | Acidic |
| D. | Neutral |
| Answer» B. Amphoteric | |
| 361. |
Lime water is |
| A. | CaO |
| B. | Ca(OH)2 |
| C. | CaCO3 |
| D. | CaCI2 |
| Answer» C. CaCO3 | |
| 362. |
Methyl orange is |
| A. | Pink in acidic medium, yellow in basic medium |
| B. | Yellow in acidic medium, pink in basic medium |
| C. | Colourless in acidic medium, pink in basic medium |
| D. | Pink in acidic medium, colourless in basic medium. |
| Answer» B. Yellow in acidic medium, pink in basic medium | |
| 363. |
Which one of the following will turn blue litmus red? |
| A. | Vinegar |
| B. | Lime water |
| C. | Baking soda solution |
| D. | Washing soda solution |
| Answer» B. Lime water | |
| 364. |
Which one of the following will turn red litmus blue? |
| A. | Vinegar |
| B. | Baking soda solution |
| C. | Lemon juice |
| D. | Soft drinks |
| Answer» C. Lemon juice | |
| 365. |
Which one of the following is acidic? |
| A. | Lemon juice |
| B. | Tomatoes |
| C. | Milk |
| D. | All |
| Answer» E. | |
| 366. |
The number of atoms of oxygen present in ozone are |
| A. | 3 |
| B. | 4 |
| C. | 2 |
| D. | 1 |
| Answer» B. 4 | |
| 367. |
The formula of Ozone is _______ |
| A. | O3 |
| B. | O2 |
| C. | O4 |
| D. | O6 |
| Answer» B. O2 | |
| 368. |
_______ is an omnivore animal. |
| A. | Lion |
| B. | Hawk |
| C. | Jackal |
| D. | Man |
| Answer» E. | |
| 369. |
Which of the following is terrestrial ecosystem? |
| A. | A natural forest |
| B. | A lake |
| C. | A pond |
| D. | An aquarium |
| Answer» B. A lake | |
| 370. |
______ is not a biodegradable pollutant. |
| A. | Paper |
| B. | Cotton cloth |
| C. | Cotton |
| D. | DDT |
| Answer» E. | |
| 371. |
Which of the following is an not example of abiotic factors? |
| A. | Light |
| B. | Plants |
| C. | Heat |
| D. | Temperature |
| Answer» C. Heat | |
| 372. |
Which of the following is an example of herbivores? |
| A. | Cow |
| B. | Shark |
| C. | Lion |
| D. | Tiger |
| Answer» B. Shark | |
| 373. |
Which of the following is an example of producers? |
| A. | Plastic pens |
| B. | Plastic cans |
| C. | Polythene |
| D. | Green plants |
| Answer» E. | |
| 374. |
The functional unit of environment is |
| A. | Ecosystem |
| B. | Nitrogen |
| C. | Carbon |
| D. | Oxygen |
| Answer» B. Nitrogen | |
| 375. |
The constituents which do not form eco-system are |
| A. | Biotic constituents |
| B. | Plastic bags |
| C. | Abiotic constituents |
| D. | All of these |
| Answer» C. Abiotic constituents | |
| 376. |
Which of the following is a non-biodegradable substance? |
| A. | Virgin plastic |
| B. | Plastic |
| C. | Plants |
| D. | Plant producers |
| Answer» C. Plants | |
| 377. |
Which of the following is a biodegradable substance? |
| A. | Glass |
| B. | Plants |
| C. | Plastics |
| D. | Polythene |
| Answer» C. Plastics | |
| 378. |
One cell-thick vessels are called |
| A. | Arteries |
| B. | Veins |
| C. | Capillaries |
| D. | Pulmonary artery |
| Answer» D. Pulmonary artery | |
| 379. |
Blood consist of what fluid medium? |
| A. | Lymph |
| B. | Platelets |
| C. | Plasma |
| D. | All of these |
| Answer» D. All of these | |
| 380. |
Respiratory pigment in human body is |
| A. | Chlorophyll |
| B. | Water |
| C. | Blood |
| D. | haemoglobin |
| Answer» E. | |
| 381. |
Lipase acts on |
| A. | Amino acids |
| B. | Fats |
| C. | Carbohydrates |
| D. | All of these |
| Answer» C. Carbohydrates | |
| 382. |
Which of these juices is secreted by pancreas? |
| A. | Trypsin |
| B. | Pepsin |
| C. | Bile juice |
| D. | Both I and II |
| Answer» E. | |
| 383. |
Bile juice is secreted by |
| A. | Stomach |
| B. | Pancreas |
| C. | Small intestine |
| D. | Liver |
| Answer» E. | |
| 384. |
Temporary finger like extensions on amoeba are called |
| A. | Cell membrane |
| B. | Cell wall |
| C. | Pseudopodia |
| D. | Cilia |
| Answer» D. Cilia | |
| 385. |
Which element is used in the synthesis of proteins? |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Nitrogen |
| D. | Carbon dioxide |
| Answer» D. Carbon dioxide | |
| 386. |
Opening and closing of pores is a function performed by |
| A. | Stomata |
| B. | Chlorophyll |
| C. | Chloroplast |
| D. | Guard cells |
| Answer» E. | |
| 387. |
Photosynthesis is a |
| A. | Catabolic process |
| B. | Parabolic process |
| C. | Amphibolic process |
| D. | Photochemical lprocess |
| Answer» E. | |
| 388. |
The small pores present of leaf’s surface are called |
| A. | Stomata |
| B. | Chlorophyll |
| C. | Guard cells |
| D. | None of these |
| Answer» B. Chlorophyll | |
| 389. |
Main site of photosynthesis |
| A. | Leaf |
| B. | Stem |
| C. | Chloroplast |
| D. | Guard cells |
| Answer» D. Guard cells | |
| 390. |
Carbohydrates in the plants are stored in the form of |
| A. | Glycogen |
| B. | Starch |
| C. | Glucose |
| D. | Maltose |
| Answer» C. Glucose | |
| 391. |
Proteins after digestion are converted into |
| A. | Carbohydrates |
| B. | Small globules |
| C. | Amino acids |
| D. | starch |
| Answer» D. starch | |
| 392. |
The chlorophyll in photosynthesis is used for |
| A. | Absorbing light |
| B. | Breaking down water molecule |
| C. | No function |
| D. | Reduction of CO2 |
| Answer» B. Breaking down water molecule | |
| 393. |
IUCD is for |
| A. | Vegetative propagation |
| B. | Contraception |
| C. | Increasing fertility |
| D. | Avoiding miscarriage |
| Answer» C. Increasing fertility | |
| 394. |
Fruits are formed from |
| A. | Stamen |
| B. | Stigma |
| C. | Ovary |
| D. | Ovule |
| Answer» D. Ovule | |
| 395. |
What is the puberty age in human males? |
| A. | 8-10 |
| B. | 10-12 |
| C. | 12-14 |
| D. | 14-16 |
| Answer» D. 14-16 | |
| 396. |
Where does fertilization occur in human females? |
| A. | Uterus |
| B. | Cervix |
| C. | Oviduct |
| D. | None of these |
| Answer» E. | |
| 397. |
Which is the portion on which grafting is done it provides the roots? |
| A. | Stock |
| B. | Scion |
| C. | Both a and b |
| D. | None of these |
| Answer» B. Scion | |
| 398. |
When a animal is cut into pieces and each piece grows into a complex organism. What is the process? |
| A. | Budding |
| B. | Fragmentation |
| C. | Spore formation |
| D. | Regeneration |
| Answer» E. | |
| 399. |
Which of the following is a contraceptive? |
| A. | Copper t |
| B. | Condom |
| C. | Diaphragm |
| D. | All of these |
| Answer» E. | |
| 400. |
Which of the following disease is transmitted sexually? |
| A. | Kala azar |
| B. | Jaundice |
| C. | Cholera |
| D. | Syphilis |
| Answer» E. | |