Daily Quiz: UPSC Prelims Marathon- July 13

Statement 1 is incorrect. Doppler weather radar is an observational tool for monitoring and predicting severe weather events such as hailstorms, thunder storms, cyclones and tornados. It uses the Doppler effect by bouncing a microwave signal off a desired target to produce velocity data.

Statement 2 is correct. It gives information about wind velocity and also about precipitation.

Both the statements are correct.

About Juno:

• It is orbiting Jupiter from pole to pole, 5,000 kilometers above planet’s cloud tops.
• Its mission is to understand the origin and evolution of Jupiter, investigate the existence of a solid planetary Jupiter’s core, map Jupiter’s intense magnetic field, measure the amount of water and ammonia in the deep atmosphere and observe Jupiter’s aurora.

Statement 1 is incorrect. KalamSat is a 3-D printed satellite. This is the first time that 3-D printing technology is used to make satellites.

Statement 2 is correct. KalamSat satellite weighs only 64 grams which is lighter than a smartphone. The satellite is made up of reinforced carbon fibre polymer.

About KalamSat:

• The competition was all about creating an experimental satellite that would fit in a 4 metre cube and also possess an accurate mass of 64 grams, which can be sent to space.
• The aim of the project is to take the performance of new technology to space.
• The tiny satellite is supposed to operate for 12 minutes in a micro-gravity environment of space.

Both the options and b are correct.

More about Helicobacter pullorum:

• Helicobacter pullorum is a pathogen commonly found in the liver and gut of poultry birds including chickens.
• It is untreatable and may be cancer-causing. It is being suspected that H. pullorum is resistant to wide range of antibiotics such as fluoroquinolones, cephalosporins, sulfonamides and macrolides.
• Infected chicken with Helicobacter pullorum bacterium when consumed are known to cause gastrointestinal infections in humans.
• Besides, Helicobacter pullorum is known to produce a cancer causing agent called cytolethal distending toxin.
• This toxin damages the DNA and interferes with the cell cycle. Since this multidrug resistance bacterium also infects the liver, it increases the risk of cancer in the organ.

Statement 1 is correct.

Statement 2 is incorrect. Superbugs are deadly bacteria which cannot be treated by current antibiotics and other drugs.
About Tasmanian devil:

• The Tasmanian devil is a carnivorous marsupial belonging to the family Dasyuridae.
• They are endemic in the wild only in Tasmania, island state of Australia.
• It is largest carnivorous marsupial in the world. It has stocky and muscular build, black fur, pungent odour, keen sense of smell and extremely loud and disturbing screech.
• Its large head and neck allow it to generate strongest bites per unit body mass among any extant mammal land predator.

Statement 1 is incorrect, while Statement 2 and 3 are correct. Therefore, the correct option is b.

Microwave ovens are so quick and efficient because they channel heat energy directly to the molecules (tiny particles) inside the food.

Ans: d

Both the statements are incorrect.

Statement 1 is incorrect. It has just enough mass to enable the fusion (not fission, as mentioned in the question) of hydrogen nuclei into helium at its centre .

Statement 2 is incorrect. The star was identified by SuperWASP, a planet-finding experiment run by several universities. It was detected when it passed in front of its larger parent star, forming an eclipsing stellar binary system.

More Details:

• It is slightly larger than Saturn in size and may possibly have Earth-sized planets with liquid water in its orbit.
• The discovery of EBLM J0555-57A also makes the best possible candidate for detecting Earth-sized planets which can have liquid water on their surfaces, such as TRAPPIST-1, an ultra-cool dwarf surrounded by seven temperate Earth-sized worlds.