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.
| 301. |
Which Mission of NASA created Guinness World Record for highest altitude fix of GPS signal recently? |
| A. | Asteroid Redirect Robotic Mission |
| B. | Magnetospheric Multiscale Mission |
| C. | Orion spacecraft Mission |
| D. | MAVEN: Mars Atmosphere and Volatile EvolutioN Mission |
| Answer» C. Orion spacecraft Mission | |
| 302. |
Which country launched the pulsar navigation satellite XPNAV-1? |
| A. | Japan |
| B. | China |
| C. | India |
| D. | Russia |
| Answer» C. India | |
| 303. |
Scientists of US Geological Survey and NASA recently discovered water on which asteroid? |
| A. | Ceres |
| B. | Vesta |
| C. | Psyche |
| D. | Pallas |
| Answer» D. Pallas | |
| 304. |
Which are the two newly identified biomarkers that will help in easy diagnosis of drug resistant Tuberculosis? |
| A. | miR-16 and miR-155 |
| B. | miR-34 and miR-13a |
| C. | miR-29a and miR-125b |
| D. | miR-6 and miR-112 |
| Answer» B. miR-34 and miR-13a | |
| 305. |
Which largest ever space telescope is expected to be launched by NASA in 2018? |
| A. | James Webb Space Telescope |
| B. | Hubble Space Telescope |
| C. | Kepler Space Telescope |
| D. | TRAPPIST telescope |
| Answer» B. Hubble Space Telescope | |
| 306. |
NASA recently completed the construction of which Telescope? |
| A. | Giant Metre-wave Radio Telescope |
| B. | Europa Hubble Space Telescope |
| C. | Aperture Spherical Telescope |
| D. | James Webb Space Telescope |
| Answer» E. | |
| 307. |
Which of the following colors is least scattered by fog, dust of smoke? |
| A. | Violet |
| B. | Blue |
| C. | Red |
| D. | Yellow |
| Answer» D. Yellow | |
| 308. |
The phenomena of light responsible for the working of the human eye is |
| A. | Reflection |
| B. | Refraction |
| C. | Power of accommodation |
| D. | Persistence of vision |
| Answer» C. Power of accommodation | |
| 309. |
The light sensitive cell present on retina and is sensitive to the intensity of light is: |
| A. | Cones |
| B. | Rods |
| C. | Both rods and cones |
| D. | None of these |
| Answer» C. Both rods and cones | |
| 310. |
The persistence of vision for human eye is |
| A. | 1/10th of a second |
| B. | 1/16th of a second |
| C. | 1/6th of the second |
| D. | 1/18th of a second |
| Answer» C. 1/6th of the second | |
| 311. |
The least distance of distinct vision for a young adult with normal vision is |
| A. | 25 m |
| B. | 20 m |
| C. | 25 cm |
| D. | 20 cm |
| Answer» D. 20 cm | |
| 312. |
The change in the focal length of human eye is caused due to |
| A. | Ciliary muscles |
| B. | Pupil |
| C. | Cornea |
| D. | Iris |
| Answer» B. Pupil | |
| 313. |
The image formed by retina of human eye is |
| A. | Virtual and erect |
| B. | Real and inverted |
| C. | Virtual and inverted |
| D. | Real and erect |
| Answer» C. Virtual and inverted | |
| 314. |
Which of the following is the ultimate source of energy for us? |
| A. | LPG |
| B. | Nuclear |
| C. | Solar |
| D. | CNG |
| Answer» D. CNG | |
| 315. |
In which of the following kinetic energy is converted into electrical energy? |
| A. | Tidal energy |
| B. | Hydro energy |
| C. | Wind energy |
| D. | All of these |
| Answer» E. | |
| 316. |
Which of the following is normally used in solar cookers for trapping solar energy? |
| A. | Solar panels |
| B. | Silicon cells |
| C. | Mirrors |
| D. | Any of above |
| Answer» C. Mirrors | |
| 317. |
Which energy source is the largest source used in India? |
| A. | CNG |
| B. | LPG |
| C. | Coal |
| D. | Bio Gas |
| Answer» C. Coal | |
| 318. |
Which of the following produces energy because of temperature difference at various levels in ocean. |
| A. | Tidal energy |
| B. | Wave energy |
| C. | Solar energy |
| D. | Ocean thermal energy |
| Answer» B. Wave energy | |
| 319. |
Which of the following is a component of bio-gas? |
| A. | Methane |
| B. | LPG |
| C. | CNG |
| D. | Hydrogen sulphide |
| Answer» B. LPG | |
| 320. |
Which method is used to produce electricity in thermal power plant? |
| A. | By heating chargeable cells |
| B. | By boiling water |
| C. | By pushing pistons by heat energy |
| D. | Any of above |
| Answer» C. By pushing pistons by heat energy | |
| 321. |
Which of the following is the odd one out? |
| A. | Petroleum |
| B. | Hydro electricity |
| C. | Coal |
| D. | CNG |
| Answer» C. Coal | |
| 322. |
Which method is used to produce electricity in hydroelectric power plant. |
| A. | By boiling the water to produce steam |
| B. | By ionizing water |
| C. | By running dynamo by kinetic energy |
| D. | Any of the above |
| Answer» D. Any of the above | |
| 323. |
Which is the most popular kitchen fuel in India? |
| A. | LPG |
| B. | Kerosene |
| C. | Coal |
| D. | Firewood |
| Answer» B. Kerosene | |
| 324. |
A body of mass 1kg is attracted by the earth with a force which is equal to |
| A. | 9.8N |
| B. | 6.67x 1011 |
| C. | 1 N |
| D. | 9.8m/s |
| Answer» B. 6.67x 1011 | |
| 325. |
The radius of curvature of a mirror is 20cm the focal length is |
| A. | 20cm |
| B. | 10cm |
| C. | . 40cm |
| D. | 5cm |
| Answer» C. . 40cm | |
| 326. |
Convex lens focus a real, point sized image at focus, the object is placed |
| A. | At focus |
| B. | Between F and 2F |
| C. | At infinity |
| D. | At 2F |
| Answer» D. At 2F | |
| 327. |
The optical phenomena, twinkling of stars, is due to |
| A. | Atmospheric reflection |
| B. | Total reflection |
| C. | Atmospheric refraction |
| D. | Total refraction |
| Answer» D. Total refraction | |
| 328. |
In optics an object which has higher refractive index is called |
| A. | Optically rarer |
| B. | Optically denser |
| C. | Optical density |
| D. | Refractive index |
| Answer» C. Optical density | |
| 329. |
A concave mirror gives virtual, refract and enlarged image of the object but image of smaller size than the size of the object is |
| A. | At infinity |
| B. | Between F and C |
| C. | Between P and F |
| D. | At E |
| Answer» D. At E | |
| 330. |
Power of the lens is -40, its focal length is |
| A. | 4m |
| B. | -40m |
| C. | -0.25m |
| D. | 25m |
| Answer» D. 25m | |
| 331. |
A concave mirror gives real, inverted and same size image if the object is placed |
| A. | At F |
| B. | At infinity |
| C. | At C |
| D. | Beyond C |
| Answer» D. Beyond C | |
| 332. |
Image formed by plane mirror is |
| A. | Real and erect |
| B. | Real and inverted |
| C. | Virtual and erect |
| D. | Virtual and inverted |
| Answer» D. Virtual and inverted | |
| 333. |
Complete the sentence. Friction always ____________ 1. Focal length of plane mirror is |
| A. | At infinity |
| B. | Zero |
| C. | Negative |
| D. | None of these |
| Answer» B. Zero | |
| 334. |
An element with atomic number will form a basic oxide________ |
| A. | 7 |
| B. | 17 |
| C. | 14 |
| D. | 11 |
| Answer» E. | |
| 335. |
Identify the wrong sequence of the elements in a group |
| A. | Ca, Br, Ba |
| B. | Cu, Au, Ag |
| C. | N,P, As |
| D. | Cl, Br, I |
| Answer» C. N,P, As | |
| 336. |
Which is not true about the noble gases? |
| A. | They are non metallic in nature |
| B. | They exist in atomic form |
| C. | They are radioactive in nature |
| D. | Xenon is the most reactive among these |
| Answer» D. Xenon is the most reactive among these | |
| 337. |
Identify the group which is not a Dobereiner triad |
| A. | Li, Na, K |
| B. | Be, Mg, Cr |
| C. | Ca, Sr, Ba |
| D. | Cl, Br, I |
| Answer» C. Ca, Sr, Ba | |
| 338. |
Electronic configuration of Al+3 is |
| A. | 2,8,3 |
| B. | 2,8,8 |
| C. | 2,8 |
| D. | 2,8,8,3 |
| Answer» D. 2,8,8,3 | |
| 339. |
In the third period of the periodic table the element having smallest size is |
| A. | Na |
| B. | Ar |
| C. | Cl |
| D. | Si |
| Answer» C. Cl | |
| 340. |
An element belongs to period 2 and group 2 th number of valence electrons in the atoms of this element is. |
| A. | 2 |
| B. | 4 |
| C. | 3 |
| D. | 1 |
| Answer» E. | |
| 341. |
The group number and period number respectively of an element with atomic number 8 is. |
| A. | 6,2 |
| B. | 16,2 |
| C. | 6,8 |
| D. | 16,4 |
| Answer» B. 16,2 | |
| 342. |
An element has an atomic number of 15 with which of the following elements will it show similar chemical properties. |
| A. | Be (4) |
| B. | Ne (10) |
| C. | N(7) |
| D. | O (8) |
| Answer» D. O (8) | |
| 343. |
14 elements after actinium is called |
| A. | Lanthanides |
| B. | Actinides |
| C. | D-block elements |
| D. | P block elements |
| Answer» C. D-block elements | |
| 344. |
Soaps are formed by saponification of |
| A. | alcohols |
| B. | glycosides |
| C. | simple esters |
| D. | carboxylic acids |
| Answer» D. carboxylic acids | |
| 345. |
Which of the following can be used for the denaturation of ethyl alcohol? |
| A. | Methyl alcohol |
| B. | Pyridines |
| C. | Copper sulphate |
| D. | All of above |
| Answer» E. | |
| 346. |
Vinegar is a solution of |
| A. | 30% � 40% acetic acid in alcohol |
| B. | 5% � 8% acetic acid in alcohol |
| C. | 5% � 8% acetic acid in water |
| D. | 15% � 20% acetic acid in water |
| Answer» D. 15% � 20% acetic acid in water | |
| 347. |
Covalent compounds |
| A. | (a) have high melting and boiling point |
| B. | are mostly soluble in water |
| C. | are formed between atoms of metals and non-metals |
| D. | are formed by the sharing of electrons in the bonding atoms. |
| Answer» E. | |
| 348. |
The by product of soap is |
| A. | isoprene |
| B. | glycerol |
| C. | butene |
| D. | ethylene glycol |
| Answer» C. butene | |
| 349. |
The substnace not responsible for the hardness of water is |
| A. | Sodium nitrate |
| B. | calcium hydrogen carbonate |
| C. | calcium carbonate |
| D. | magnesium carbonate |
| Answer» B. calcium hydrogen carbonate | |
| 350. |
Tertiary butane gets oxidised with oxidising agents like alkaline KMNO4 to |
| A. | Isobutane |
| B. | Ter-butyl alcohol |
| C. | Seconadary-propyl alcohol |
| D. | All of above |
| Answer» C. Seconadary-propyl alcohol | |