Online Science Quiz 3

-
Genral Knowledge Science Quizz
This is the general knowledge questions and answers section on "GeneralScience".This quiz will test your general science knowledge.

1. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is

Argon
Xenon
Helium
Krypton

2. The gases used in different types of welding would include

oxygen and hydrogen
oxygen, hydrogen, acetylene and nitrogen
oxygen, acetylene and argon
oxygen and acetylene

3. The property of a substance to absorb moisture from the air on exposure is called

osmosis
deliquescence
efflorescence
desiccation

4. In which of the following activities silicon carbide is used?

Making cement and glass
Disinfecting water of ponds
cutting very hard substances
Making casts for statues

5. The average salinity of sea water is

3%
3.5%
2.5%
2%

Score = Correct answers:

Comments

Post a Comment

Popular posts from this blog

Who is Who & What is What

-
MOUNTAINS • Mount Olympus is in Greece. • The mountain range in Russia that is regarded as the boundary b/w Europe & Asia is Urals. • Margalla Hills of Islamabad are extension of Himaliya range. • Ural mountains separate Asia from Europe. • Ordovician are oldest rocks. • Oldest mountain system are Araveli. • Youngest mountain system are Himaliyas. • Andes Mountains are in South America. • Ring of Fire are volcanoes in Circum-Pacific Seismic belt. • Alps are Europe’s largest mountain system. • Atlas are North Africa’s mountain range. Atlas Mountains are in Morocco. • The Himalaya mountain range (Asia) is the greatest mountain range in the world. • Ayers Rock is the largest single rock in the world. • Mauna kea volcano is in Hawaii • What is the world’s longest mountain range-The Andes • Black forest is a mountain in Germany. • Rocky or Rockies Mountains is the largest mountain system of North America. • Koh-i-Sultan is in Pakistan. • Highest mountain s...
Read more

The Five Generations of Computers Explained with Stage by Stages

-
Image
The Five Generations of Computers Explained with Stage by Stages.............. The term ‘computer generation’ is often used in relation to the hardware of computers. Each phase of computer development is known as a separate generation of computers. Each phase of development is characterised by the type of switching circuits it utilized.Most computers today use the idea of ‘stored program computer’, proposed by Dr. John Von Neumann in 1945. The architecture of a computer is based on three key concepts; i. Data and instructions are stored in a single read-write memory. ii. The memory contents are addressable by locations. iii. Execution takesplace in a sequential fashion, from one instruction to the next unless modified  explicity. First Generation Computers (1949-55) The first generation used vaccum tubes, and machine laguage was used for giving instructions. They used the concept of ‘stored program’. They were very large in size and their programming...
Read more

Petra Jordan in Urdu

-
Image
Petra is an archaeological and historical city in the Jordanian governorate of Ma'an, which for its architecture, carved rocks and water piping system is known. Around the 6th Founded century BC as the capital of the Nabataeans, it is a symbol of Jordan and the most visited tourist attraction.  It is situated on the slopes of a basin between the mountains, the eastern flank of Arabah (Wadi Araba), the large valley running from the Dead Sea in the Gulf of Aqaba to form. Petra is a UNESCO world heritage site since 1985. Petra is considered the most famous and gorgeous site in Jordan located about 262 km south of Amman and 133 km north of Aqaba. It is the legacy of the Nabataeans, an industrious Arab people who settled in southern Jordan more than 2000 years ago. Admired then for its refined culture, massive architecture and ingenious complex of dams and water channels, Petra is now a UNESCO world heritage site and one of The New 7 Wonders of the World that ench...
Read more