Q. Consider the following statements about the microphone and the speaker of a mobile phone -
1. The microphone converts sound to a mechanical signal.
2. The microphone converts sound to an electrical signal.
3. The speaker converts a mechanical signal to sound.
4. The speaker converts an electrical signal to sound.
Which of the statements given above are correct?
1) 1 and 3
2) 1 and 4
3) 2 and 3
4) 2 and 4
Q. A 100 W electric bulb is used for 10 hours a day. How many units of electrical energy are consumed by the bulb in 3 days (1 unit = 1 kWh)?
1) 3.00
2) 1.08
3) 2.16
4) 0.33
Q. The area under the velocity-time graph for a particle moving in a straight line with uniform acceleration gives -
1) its average velocity
2) its net displacement
3) the distance travelled by it
4) its average speed
Q. The power of a lens of focal length 10 cm is -
1) 0.1 dioptre
2) 1 dioptre
3) 10 dioptre
4) 100 dioptre
Q. Consider the following statements regarding the burning of magnesium ribbon in the air -
1. The white powder of MgO is formed.
2. It is an example of a combustion reaction.
3. Heat and light are produced.
Which of the statements given above is correct?
1) Only 1 and 2
2) Only 1 and 3
3) Only 2 and 3
4) All 1, 2 and 3
Q. Which of the following statements with regard to heating lead nitrate powder over a flame is correct?
1. Brown fumes of NO are released.
2. Colourless O2 gas is released.
3. It is an example of an oxidation reaction.
4. It is an example of thermal decomposition used for the production of NO2 gas.
Select the correct answer using the code given below -
1) 1 and 2
2) 2, 3 and 4
3) 1, 3 and 4
4) Only 2 and 4
Q. Which one of the following is not an oxidation reaction?
1) Rusting of iron
2) Opening of soda bottle
3) Rancidity
4) Combustion
Q. Consider the following clues about the State of India -
1. It is known as the 'land of red river and blue hills'.
2. It contains three of the six physiographic divisions of India.
3. It covers about 2.39 percent of the total area of the country.
Identify the State on the basis of the given clues -
1) Karnataka
2) Andhra Pradesh
3) Assam
4) Chhattisgarh
Q. Which of the following sets of States shares a boundary with Telangana?
1) Odisha, Andhra Pradesh, Karnataka, Maharashtra
2) Chhattisgarh, Andhra Pradesh, Karnataka, Madhya Pradesh
3) Odisha, Andhra Pradesh, Karnataka, Madhya Pradesh
4) Chhattisgarh, Andhra Pradesh, Karnataka, Maharashtra
Q. Rani told her friends that last year she did boating in four different lakes, namely, Loktak, Barapani, Kolleru, and Pulicat. Which of the following states did she visit?
1) Manipur, Meghalaya, Kerala, Tamil Nadu
2) Manipur, Meghalaya, Andhra Pradesh, Tamil Nadu
3) Mizoram, Assam, Kerala, Tamil Nadu
4) Mizoram, Assam, Andhra Pradesh, Tamil Nadu
Fashion design is a dynamic and creative field that offers innovative career openings for those with a passion for style, creativity, and invention. This composition will explore the colorful job prospects in the fashion design assiduity, the original hires one can anticipate, and punctuate some o →
Foundation Date: December 8, 1991 Headquarters: The Republic of Belarus Executive Secretaries: Sergei Lebedev Member Countries: 12 Commonwealth of Independent States (CIS) was established on December 8, 1991, and the leaders of the Republic of Belarus, the Russian Federation, and Ukraine signed an a →
In 2009, an unknown programmer by the name of Satoshi Nakamoto put forward a whitepaper that proposed a creation of new form of digital currency - cryptocurrency. Cryptocurrency functions the same way as regular currencies do in that its used as a means of exchange, unit of account and a store of va →
Headquarter: New Delhi Function and Objective of the Organization: The Food Safety and Standards Authority of India (FSSAI)has been established under Food Safety and Standards Act, 2006 which consolidates various acts & orders that have hitherto handled food-related issues in various Ministries →
If you contribute your content to our site. Please mail us your content to editor@onlinegk.net