General Science - Online Test
Q1. Which of the followings is mainly produced by the activity of anaerobic bacteria on sewage?
Answer : Option D
Explaination / Solution:
Anaerobic bacteria are used in water treatment process during which marsh gas is produced. This gas have pungent smell and highly flammable.
Q2. Eddy Currents are
Answer : Option D
Explaination / Solution:
Eddy currents (also called Foucault currents) are loops of electrical current induced within conductors by a changing magnetic field in the conductor, due to Faraday's law of induction. Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field. By lenz's law an eddy current creates a magnetic field that opposes a change in the magnetic field that created it, and thus eddy currents react back on the source of the magnetic field.
Q3. Benzene and other related ring compounds (benzenoid) such as given below are called:
Answer : Option C
Explaination / Solution:
they are aromatic system as they have benzene ring intact.
Q4. Photon has a charge of
Answer : Option A
Explaination / Solution:
Photon has no charge. Photon is the packets of energy.
Q5.
Read the following statements:
i. Based on emission, there are point and diffusion sources of water pollution.
ii. Fertilisers are example of point sources of water pollution.
iii. Industrial discharge pipes are examples of diffusion sources of water pollution.
Answer : Option B
Explaination / Solution:
On the basis of emission of pollutants in water bodies, there are point and diffusion sources of water pollution. Fertilizers are example of diffusion sources of water and industrial discharge pipes are example of point source of water pollution.
Q6. Upon oxidation, one of the following halogen containing compounds forms an extremely poisonous gas – – + O2 → 2 COCl2 + 2HCl
Answer : Option C
Explaination / Solution:
CHCl3 on reaction with oxygen forms phosgene. Chloroform
decomposes when it exposed to sunlight.it decomposes to a harmful gas
phosgene(COCl2) Chloroform decomposes when it exposed to sunlight.it decomposes to a harmful gas phosgene(COCl2)
Q7. What else do we measure in Megabytes (MB)?
Answer : Option C
Explaination / Solution:
No Explaination.
Q8. Transmitter is a device that
Answer : Option D
Explaination / Solution:
A transmitter is a set up that transmits the message to the receiving end through a communication channel.its main function is to modify the message signal in a form suitable for transmission over the channel and to transmit it.The transmitter is able to generate a radio frequency alternating current that is then applied to the antenna, which, in turn, radiates this as radio waves. There are many types of transmitters depending on the standard being used and the type of device; for example, many modern devices that have communication capabilities have transmitters such as Wi-Fi, Bluetooth, NFC and cellular.
Q9. Multiplier tells us what will be the
Answer : Option A
Explaination / Solution:
No Explaination.
Q10. Opening of Suez Canal in ____ significantly reduced the cost f transportation of goods between Britain and India
Answer : Option D
Explaination / Solution:
The Suez Canal is a 101 mile (163 km) long canal ,It officially opened in November 1869.
