Do You Know These Important Questions For NDA Exam

#1. Which one among the following statements about thermal conductivity is correct?

Steel > Wood > Water

Steel > Water > Wood

Water > Steel > Wood

Water > Wood > Steel

#2. The most important raw materials used in the manufacture of cement are

Potassium nitrate, charcoal and sulphur

Transition metal oxides, sodium hydroxide or potassium hydroxide

Limestone, clay and gypsum

Limestone, sodium carbonate and silica

#3. Yellow colour light is used as fog light because yellow colour

light is most scattered by fog

has the longest wavelength among all colours

has the longest wavelength among all colours except red and orange but the red colour is already used for brake light and stop light whereas orange colour is avoided due to its similarity with red

has the shortest wavelength among all colours not already reserved for other purpose

#4. An iron ball and wooden ball of the same radius are released from a height 'H' in vacuum. The time taken to reach the ground will be

equal for both

more for the iron ball

more for the wooden ball

in ratio of their weights

#5. Which one among the following water-borne diseases is not caused by a bacteria?

Cholera

Typhoid

Bacillary dysentery

Hepatitis A

#6. Which of the following statements is/are correct?

The local time of Itanagar (Arunachal Pradesh) is about two hours ahead than Dwarka (Gujarat).

The local time at Chennai (Tamil Nadu) and Lucknow (Uttar Pradesh) is almost the same.

The local time of Mumbai (Maharashtra) is one hour ahead than Kolkata (West Bengal).

All of the above

#7. Which one among the following is the hardest part of our body?

Skull bones of head

Thumb nails

Enamel of teeth

Spinal vertebra

#8. Which of the following group is present in animal cells?

Mitochondria, Cell membrane, Cell wall, Cytoplasm

Nucleus, Cell membrane, Mitochondria, Cytoplasm

Chloroplasts, Cytoplasm, Vacuole, Nucleus

Vacoule, Cell membrane, Nucleus, Mitochondria

#9. Gandhiji's call for breaking Salt Laws was in response to the

Civil Disobedience Movement

Non-Cooperation Movement

Khilafat Movement

Quit India Movement

#10. Which among the following islands in the South China Sea are the source of conflict between several countries?

Marshall Islands

Solomon Islands

Kuril Islands

Spratly Islands

#11. Who among the following led India to their first overseas test victory in cricket?

C.K. Nayudu

M.A.K. Pataudi

Sunil Gavaskar

Bishen Singh Bedi

#12. Dhanush, a missile inducted into the Indian Navy

is a customized and naval variant of Prithvi missile

has a range of 700 km

can be launched from an aircraft

cannot carry nuclear warheads

#13. Which of the following statements is/are correct?

The Indian Army is organized into five Regional Commands

The Headquarters of Northern Command is located at Lucknow

Both of the above

None of the above

#14. The terra-cotta plough of the Harappan civilization was found at

Mohenjo-daro

Banawali

Kalibangan

Lothal

#15. Which one among the following statements is NOT correct?

More than 50% of world's animal species are found in tropical rain forest

One-third of land surface is arid or semi-arid

Floating plants (phytoplankton) in the ocean produce over half the world's oxygen

World's important deserts are located across the equator

#16. Which one among the following statements is correct?

All arteries carry oxygenated blood

All veins carry oxygenated blood

Except the pulmonary artery, all other arteries carry oxygenated blood

Except the pulmonary vein, all other veins carry oxygenated blood

#17. The main power supply in India is at 220 V, whereas that in the US is at 110 V. Which one among the following statements in this regard is correct?

110 V is safer but more expensive to maintain

110 V is safer and cheaper to maintain

110 V lead to lower power loss

110 V works better at higher latitudes

#18. Muhammad bin Tughlaq's experiment of introducing token currency could not succeed on account of

rejection of token coins by foreign merchants

shortage of copper for minting token coins

large-scale minting of spurious coins

poor quality of token currency

#19. The writ of certiorari is issued by superior court to

an inferior court to stop further proceedings in a particular case

an inferior court to transfer the record of proceedings in a case for review

an officer to show his/her right to hold a particular office

a public authority to produce a person detained by it before the court within 24 hours

#20. A glass of water does not turn into ice as it reaches 0o C. It is because

water does not solidify at 0 degree C

a certain amount of heat must be supplied to the glass of water so as to solidify

a certain amount of heat must be taken out from the glass of water so as to solidify

water solidifies at 0 degree K only