Science and Technology MCQ Set 21
Showing question 101 to 105 of total 301 MCQs
MCQ Set: 21
Solve the question on your notebook and check it by clicking (Answer and Explanation) below question.
Question No: 101
Where in Kerala has a new edible freshwater fish been discovered?
- Pampa river
- Periyar river
- Kallada river
- Kabini river
Answer and Explanation
Answer: A
Explanation
Researchers exploring the waters of the Pampa river in Pathanamthitta have chanced upon a new species of edible freshwater fish that could possibly be farmed on a commercial scale.
The new species that belongs to the Labeo genus is only the second one to be reported from Kerala. Named Labeo filiferus, it has been collected from the stretch of the Pampa running through Edakadathy in Pathanamthitta.
The fishes in the Labeo genus are widely distributed in the inland waterbodies of India, Pakistan, Nepal, Bangladesh, Sri Lanka, Burma, Malaysia, tropical Africa and Syria.
They are medium- sized elongate fishes with rounded abdomen, swollen snout, finged lips and a straight lateral line.
As many as 31 species of Labeo are reported to be present in India, with L.rohita, commonly known as Rohu, extensively used in aquaculture.
The only other Labeo species reported from Kerala is L.dussumieri.
L. Filiferus: Know More
According to the authors, L.filiferus was found to be distinct from the other species of the genus in its features including black coloured body and fins, prominent barbels, smaller eyes, longer snout and elongated dorsal and anal fins.
The eyes are brilliantly coloured with orange tinge. The specimens were 20 to 40 cm long and weighed four to five kg.
The name filiferus was taken from Latin (filum in latin means ‘thread’ and fero means ‘to bear’) and refers to the very long dorsal fin of the species.
More species of the Labeo genus are expected to be discovered in the near future from the aquatic bodies in north and central Kerala.
Question No: 102
Which online facility has DGFT set up for resolving foreign trade issues?
- Sampark@DGFT
- Contact@DGFT
- Connect@DGFT
- GetinTouch@DGFT
Answer and Explanation
Answer: B
Explanation
The Government has set up an online service facility that can be used by importers and exporters to resolve all foreign trade-related issues.
The Directorate General of Foreign Trade (DGFT), which comes under the Commerce Ministry, has asked all exporters and importers to use the system - Contact@DGFT - for resolution of their matters.
Traders can raise all matters related to the directorate or other agencies of the Centre and States through this facility, which is activated at the DGFT website.
Contact@DGFT system has been activated as a single point contact for resolving all foreign trade-related issues, for all regional authorities, export promotion councils, commodity boards and members of trade and industry.
It said best efforts will be made for expeditious resolution.
In the interest of systematic monitoring and effective resolution, exporters/importers are requested not to send their queries through twitter or e-mail and use Contact@DGFT service instead.
103) What does ATAGS stand for, in the context of DRDO?
- Published on 11 Sep 17
a. Advanced Tow Artillery Gun System
b. Advanced Towed Artillery Gun Schedule
c. Artillery Towed Advanced Gun System
d. None of the above
Answer Explanation Related Ques
104) WhatsApp is offering which mode to users apart from providing text status messages?
- Published on 11 Sep 17
a. Picture in picture feature for video calling
b. Picture in picture feature for chatting
c. Picture in picture feature for calling
d. Picture in picture feature for messaging
Question No: 103
Scientists have turned oxygen in the air into which chemical fuel?
- Methane
- CH4
- CH3
- Both a and b
- All the above
Answer and Explanation
Answer: D
Explanation
Scientists have found a way to produce methanol - an important chemical often used as fuel in vehicles - using oxygen in the air, an advance that may lead to cleaner, greener industrial processes worldwide.
Methanol is currently produced by breaking down natural gas at high temperatures into hydrogen gas and carbon monoxide before reassembling them - expensive and energy-intensive processes known as ‘steam reforming’ and ‘methanol synthesis.’
However, researchers from Cardiff University in the U.K. have discovered they can produce methanol from methane through simple catalysis that allows methanol production at low temperatures using oxygen and hydrogen peroxide.
At present global natural gas production is about 2.4 billion tonnes per annum and 4% of this is flared into the atmosphere - roughly 100 million tonnes.
The approach of using natural gas could use this “waste” gas saving, saving carbon dioxide emissions.
Question No: 104
What does ATAGS stand for, in the context of DRDO?
- Advanced Tow Artillery Gun System
- Advanced Towed Artillery Gun Schedule
- Artillery Towed Advanced Gun System
- None of the above
Answer and Explanation
Answer: D
Explanation
DRDO’s home made ATAGS (Advanced Towed Artillery Gun System) of which nearly 2,000 examples will soon equip the various units of the artillery regiment, has just proved itself to be a devastating weapon.
During the recently conducted field trials at the Pokhran range, the gun fired three shells out to a range of 47.2 kms.
This is farther than any other gun in the world!
The 155 mm 52-calibre gun is now a world record holder.
During tests, the gun fired a long range ‘High explosive – base bleed’ round. Most 155mm guns in the world max out between 40 km and 45 kms.
According to a Sputnik report, the reason for the longer range of the ATAGS is the 25-litre volume of its chamber that allows higher quantities of propellant to be used.
Other similar guns have a chamber of about 23-litre capacity.
The gun is also unique in having a six-round magazine that gives it a higher rate of fire compared to three-round magazines in others.
Question No: 105
WhatsApp is offering which mode to users apart from providing text status messages?
- Picture in picture feature for video calling
- Picture in picture feature for chatting
- Picture in picture feature for calling
- Picture in picture feature for messaging
Answer and Explanation
Answer: A
Explanation
WhatsApp has lately been trying its hands-on different features on its platform.
In July this year, the Facebook-owned messaging app rolled out a testing version of picture-in-picture feature for video calling on Android O.
Now, the WhatsApp has rolled out the support for picture-in-picture mode to its users across the globe. Apart from that, the company has also added the ability to put text as a status message.
The first feature is called picture-in-picture.
After rolling out the picture-in-picture (PIP) video calls to beta users of its app, WhatsApp has now rolled out the feature to everyone.
This means both Android and iOS users will now be able to minimize video calling window and move it around while browsing through other messages in the background.
When in a video call, you can tap back to continue the video call in picture-in-picture mode.
The picture-in-picture video calls update will only be available for Android users whose smartphones have been updated to Android 8.0 Oreo.
For iOS users, the feature works fine on iOS 10.
The second feature allows you to post text-only updates to your status. The status, just like the photos and videos will be visible for a time interval of 24 hours.
WhatsApp Changes: Know More
WhatsApp has been trying to bring in many new features on the app recently.
Very recently, WhatsApp introduced a number of changes to its iOS and Android app.
These features include the ability to pin favourite chats on top of the conversation list and the option to forward or delete shared images as one whole album.
WhatsApp for Business is another feature that has been in news for a while now.
It is currently testing new tools and the app is said to be free for small-scale companies. Large firms with a global base of customers will have to get the enterprise version of the app that might be a paid one.
The feature will let business get company’s solutions to provide customers with useful notifications like flight times, scheduled, arrival, delays, offers and other updates.