Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

First Motorcycle available for Purchase

  1. Daimler-Maybach

  2. Hildebrand & Wolfmüller

  3. Indian Scout

  4. Harley-Davidson
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Hildebrand & Wolfmüller (1894) was the first production motorcycle available for public purchase. It was manufactured in Munich, Germany. While Daimler-Maybach created earlier motorcycle prototypes (1885), they were not commercially available products.

Multiple choice general knowledge science & technology

Expansion of ABS technology used in Bikes

  1. Automatic Block Signal

  2. Anti Braking System

  3. Anti-Lock Braking System

  4. Automatic Braking System
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

ABS stands for Anti-Lock Braking System. It prevents wheel lock-up during hard braking by automatically modulating brake pressure. This helps the rider maintain steering control and stability during emergency braking situations.

Multiple choice general knowledge science & technology

What is the name of one of NASA's main payloads on board Chandrayaan-1, which confirmed the presence of water molecules on the lunar surface soil and rocks ?

  1. L3

  2. M3

  3. N3

  4. P3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Moon Mineralogy Mapper (M3) was one of NASA's main payloads on Chandrayaan-1. It was an imaging spectrometer that helped confirm the presence of water molecules on the lunar surface by analyzing the reflected light from the Moon's surface and detecting the signature of water molecules in the soil and rocks.

Multiple choice general knowledge science & technology

The life of Chanrdrayaan-1 was 2 years. But the mission was stopped abruptly. The number of days it was in orbit -

  1. 345

  2. 365

  3. 312

  4. 300
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chandrayaan-1 was designed for a 2-year mission but was terminated early due to technical issues. The spacecraft was operational for 312 days in orbit before ISRO lost communication with it in August 2009. This was approximately 10 months of actual operation instead of the planned 24 months.

Multiple choice general knowledge science & technology

Who is the principal scientist of Chandrayaan-1?

  1. J N Goswami

  2. M Annadurai

  3. S Kumar

  4. K Kumar
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dr. J N Goswami was the Principal Scientist of Chandrayaan-1. He is a renowned Indian physicist and was the Director of the Physical Research Laboratory (PRL) at the time. M Annadurai was the Project Director, not the Principal Scientist, while S Kumar and K Kumar are not associated with this role on the mission.

Multiple choice general knowledge science & technology

The highest temperature on a lunar surface is expected to reach approximately around (in celsius)

  1. 350

  2. 240

  3. 125

  4. 75
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The lunar surface experiences extreme temperature variations due to its lack of atmosphere. The highest daytime temperatures on the Moon can reach approximately 120-125°C near the lunar equator at noon. This is far hotter than the 75°C option but cooler than the exaggerated 240°C or 350°C values.

Multiple choice general knowledge science & technology

The lowest temperature on a lunar surface is expected to reach approximately around ( in celsius)

  1. -230

  2. -130

  3. -30

  4. 0
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The lunar surface experiences extreme temperature variations due to the lack of atmosphere. During the lunar night, temperatures in permanently shadowed craters can drop to approximately -230°C (-382°F), making it one of the coldest places in our solar system. The daytime surface temperature can reach 127°C (260°F).

Multiple choice general knowledge science & technology

The primary source of water molecules is the interaction of H ions from solar wind with the oxygen. Where is the oxygen coming from?

  1. It is present in the atmosphere

  2. It is present in the lunar surface soil and rock

  3. It is present in the meteor particles which collided with the moon

  4. It is also present in the solar wind
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Solar wind contains hydrogen ions (protons) that bombard the lunar surface. When these H+ ions interact with oxygen-rich minerals in the lunar regolith (soil and rocks), they form water molecules (H2O). The oxygen is chemically bound in oxides within lunar surface materials, not in the atmosphere (which the Moon barely has) or coming from solar wind itself.