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- Question
Which is an example of an endothermic reaction?
Options- A. combustion
- B. mix of CaO with water
- C. coal is burnt
- D. photosynthesis
- Correct Answer
- photosynthesis
ExplanationA chemical reaction in which involves the absorption of heat from the environment is called a Endothermic reaction.
Examples : Dissolving ammonium chloride in water, photosynthesis, melting ice cubes, mixing of potassium chloride with water,...
In the contrast, chemical reactions involving release of heat are known as exothermic reactions.
Examples : Combustion, coal is burnt, mix of CaO with water,...
- 1. Optical fiber works on the principle of
Options- A. Scattering
- B. interference
- C. total internal reflection
- D. refraction Discuss
- 2. A protein is being assembled when
Options- A. RNA is being translated
- B. DNA is being translated
- C. RNA is being transcribed
- D. DNA is being transcribed Discuss
- 3. Which one of the following statementsis not correct?
Options- A. BrahMos is a supersonic cruise missile made by India and Russian Federation.
- B. The name BrahMos came from two rivers, Brahmaputra of India and Moskva of Russia.
- C. Indian military scientists were capable of integrating BrahMos cruise missile with Sukhoi-30 MKI fighter.
- D. Defence Research and Development Organization is the manufacturer of Sukhoi-30 MKI fighter. Discuss
- 4. Localized area of pus formation in the lungs?
Options- A. Pleural effusion
- B. Pulmonary abscess
- C. Pleurisy
- D. Pulmonary edema Discuss
- 5. What form of Shiva is most prominent in the Brihadeshvara Temple built by the Chola dynasty?
Options- A. Harihara
- B. Bhairava
- C. .Rudra
- D. Tripurantaka Discuss
- 6. When one enters a dark room after being in bright light one is not able to see anything clearly for a while because
Options- A. the retina of the eye moves forward
- B. the retina of the eye moves backward
- C. the iris is unable to dilate the pupil immediately to be able to see things
- D. the eye has no power of accommodation Discuss
- 7. What is the SI unit of frequency?
Options- A. Newton
- B. Watt
- C. Farad
- D. Hertz Discuss
- 8. Instrument for measuring wind velocity is called
Options- A. Coulombmeter
- B. Anemometer
- C. Cyanometer
- D. Chronometer Discuss
- 9. The plasma of the blood contains which among the following constituents? I. Proteins II. Salts III. Hormones
Options- A. Only I and II
- B. Only I and III
- C. Only II and III
- D. All I, II and III Discuss
- 10. Consider the following statement :?If you feel you are trapped in a black hole, don?t give up. There is a way out ?Who among the following made the above statement?
Options- A. Albert Einstein
- B. Stephen Hawking
- C. C. V. Raman
- D. Abdus Salam Discuss
More questions
Correct Answer: total internal reflection
Correct Answer: RNA is being translated
Explanation:
A protein is being assembled when RNA is being translated. This process goes as, by the process of transcription first DNA is is converted to mRNA. And then by the process of translation this mRNA is converted to proteins.
=> DNA ----> mRNA ----> Proteins.
Correct Answer: Defence Research and Development Organization is the manufacturer of Sukhoi-30 MKI fighter.
Explanation:
The Sukhoi Su-30MKI is a twinjet multirole air superiority fighter developed by Russia's Sukhoi and built under licence by India's Hindustan Aeronautics Limited (HAL) for the Indian Air Force (IAF).The BrahMos is a medium-range ramjet supersonic cruise missile that can be launched from submarine, ships, aircraft, or land. It is a joint venture between the Russian Federation's NPO Mashinostroyeniya and India's Defence Research and Development Organisation (DRDO) who together have formed BrahMos AerospaceThe name BrahMos is a portmanteau formed from the names of two rivers, the Brahmaputra of India and the Moskva of Russia.
Correct Answer: Pulmonary abscess
Explanation:
Localized area of pus formation in the lungs is called Pulmonary abscess.
Correct Answer: Tripurantaka
Explanation:
The most prominent form of Shiva in Brihadeshvara Temple built by Chola dynasty is Tripuntaka. Tripurantaka is a manifestation of the Hindu god Shiva. In this aspect, Shiva is depicted with four arms wielding a bow and arrow. Shiva as Tripurantaka is accredited with destroying three mythical cities of the Asuras. It is believed that the Rudraksha came from lord Shiva?s eyes, when he destroyed Tripura.
Correct Answer: the iris is unable to dilate the pupil immediately to be able to see things
Explanation:
The size of the pupil of the eye automatically adjusts itself according to the intensity of light passing through it;if the intensity is more , the size is less, if less, it is more. So in our case the pupil should dilate i.e, increase in size to be able to see in the dark . This switchover takes sometime. But here the entry into the dark room is immediate . So the eye has no time to adjust itself and hence is not able to see at all for a while.
Correct Answer: Hertz
Correct Answer: Anemometer
Correct Answer: All I, II and III
Correct Answer: Stephen Hawking
Explanation:
"If you feel you are trapped in a black hole, don't give up. There is a way out." ?Stephen Hawking.
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