Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

When and who made the World’s first GSM call.

  1. Dr. Martin Cooper in 1973

  2. October 13, 1983, President of Ameritech Mobile Communications Bob Barnett.

  3. December 5 1991 US president George HW Bush.

  4. July 1, 1991, Finnish Prime Minister Harri Holkeri.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The first GSM call was made on July 1, 1991, by Finnish Prime Minister Harri Holkeri. This call was made on the Radiolinja network in Finland, marking the launch of commercial GSM services.

Multiple choice general knowledge science & technology

Among this ,In which of the pool India has the second largest pool in the World?

  1. Scientists and Engineers

  2. Cricketer and Scientists

  3. Engineers and doctor

  4. Doctor and Cricketer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

India has one of the world's largest pools of scientists and engineers. The claim about 'second largest' may refer to a specific historical context or category (such as English-speaking countries or certain metrics). The question wording is somewhat unclear.

Multiple choice general knowledge science & technology

SCN^-1

  1. thiocyanate

  2. cynide

  3. cynate

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

The SCN^-1 ion is named thiocyanate according to IUPAC nomenclature. The prefix 'thio-' indicates that sulfur replaces oxygen in the cyanate ion (OCN^-1). Options B and C contain misspellings of cyanide and cyanate, while option D is not a recognized chemical name.

Multiple choice general knowledge science & technology

NaClO3

  1. sodiumchloric oxide

  2. sodium chloroxide

  3. sodium chlorate

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

NaClO3 is named sodium chlorate following IUPAC nomenclature rules. The '-ate' suffix indicates ClO3^-1 (chlorate ion). Option A incorrectly suggests chloric oxide, option B incorrectly uses '-oxide' suffix, and option D incorrectly proposes 'chloro sodiumoxide' which is not standard chemical naming.

Multiple choice general knowledge science & technology

FSO2(OH)

  1. Fluric acid

  2. Fluorosulfuric acid

  3. Flurous acid

  4. Sulphur fluric acid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

FSO2(OH) is fluorosulfuric acid, one of the strongest known superacids. The name combines 'fluoro-' (fluorine attached) with 'sulfuric acid'. Options A and C incorrectly use 'Fluric/Flurous' (misspellings), while option D incorrectly orders the components as 'Sulphur fluric acid' rather than the correct systematic name.

Multiple choice general knowledge science & technology

Who is the co-founder of Sun Microsystems?

  1. Rajiv Gupta

  2. Sabeer Bhatia

  3. Sanjay Tejwrika

  4. Vinod Khosla
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vinod Khosla was a co-founder of Sun Microsystems in 1982 along with Scott McNealy, Bill Joy, and Andy Bechtolsheim. Khosla is a prominent Indian-American entrepreneur and venture capitalist. Rajiv Gupta, Sabeer Bhatia (Hotmail founder), and Sanjay Tejwrika are not associated with Sun's founding.

Multiple choice general knowledge science & technology

N3H

  1. Ammonia

  2. Ammonium

  3. Hydrazoic acid

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

N3H is hydrazoic acid (HN3), a weak and highly explosive compound. The formula represents hydrogen azide. Ammonia is NH3, ammonium is NH4^+, and 'nitrogen hydride' is too generic as both ammonia and hydrazoic acid technically contain nitrogen and hydrogen.

Multiple choice general knowledge science & technology

Who is the creator of Pentium chip (needs no introduction as 90% of the today's computers run on it)?

  1. Vinod Khosla

  2. Vinod Dahm

  3. Vinod duia

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

Vinod Dahm (also known as Vinod Dham) led the Pentium chip development team at Intel and is often called the 'Father of the Pentium'. He was born in Pune, India. Vinod Khosla is a Sun Microsystems co-founder, not the Pentium creator. Options C and D appear to be fictional names.

Multiple choice general knowledge science & technology

CH3CHO - Careful its IUPAC name

  1. Acetone

  2. Acetaldehyde

  3. Methanal

  4. Ethanal
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CH3CHO is acetaldehyde, whose IUPAC name is ethanal. The 'eth-' prefix indicates two carbons, and '-al' suffix denotes an aldehyde functional group. Acetone is (CH3)2CO, methanal is HCHO (formaldehyde), so ethanal is the correct systematic name for CH3CHO.