Useful Questions and Answers

Important Questions and Answers Which can increase your knowledge.

Question 1: Which country owns the world’s first helicopter?

Answer: The name of this helicopter is Homer and it is owned by Russia

Question 2: What are the organs of a human being which remain alive for some time even after death?

Answer: Nails and hair

Question 3: What is the most expensive metal in the world?

Answer: Platinum

Question 4: How many kilo-meters are there in a mile?

Answer: 1.6 km

Question 5: Which bird does not have eyes?

Answer: Bats

Question 6: What is a rhino horn like?

Answer: Rhino horn has hair

Question 7: What is the weight of human eye?

Answer: Seven grams

Question 8: What is the most common thing in hair?

Answer: Sulfur

Question 9: How long does a frog sleep in a year and how long does it wake up?

Answer: He sleeps for six months and wakes up for six months

Question 10: Is earthworm (Quechua) male or female?

Answer: It has both features

Question 11: Which vitamin is present in rain water?

Answer: Vitamin B12

Question 12: How many cells of the human body die within a minute?

Answer: Three hundred million sales

Question 13: How many bones are there in a child’s body?

Answer: There are 300 bones that connect over time

Question 14: Can the human brain feel the pain inside it?

Answer: The brain feels pain all over the body but cannot feel the pain inside itself

Question 15: How far can you see from the Eiffel Tower?

Answer: 90 km

Question 16: What material is an airplane made of?

Answer: Aluminum

Question 17: Which bird does not build its own nest but lays its eggs in the nests of others?

Answer: Coil

Question 18: What is the name of the world’s first computer?

Answer: Mark I.

Question 19: What is the most eaten vegetable in the world?

Answer: Potatoes

Question 20: How long does the human heart rest in human life?

Answer: Not even a second

Medical Useful Information

Medical Useful Information, Medical fitness Are:

Blood pressure

120/80 – Normal

130/85 – Normal (Control)

140/90 – More then normal

150/95 – too much)


72 minutes (standard)

60 — 80 p.m. (Normal)

40 – 180 p.m. (Not normal)


98.4 F (normal)

More than 99.0 F (fever)

Blood Group

What blood group is the percentage of people?

O + 1 in 3 37.4%       (Common to most people)

A + 1 in 3 35.7%

B + 1 in 12 8.5%

AB + 1 in 29 3.4%

O- 1 in 15 6.6%

A- 1 in 16 6.3%

B- 1 in 67 1.5%

AB-1 in 167.6%     (In very few people)

Which blood groups can take other blood groups?

O- can take O-

O + can take O +, O-

A- can take A-, O-

A + can take A +, A-, O +, O-

B- can take B-, O-

B + can take B +, B-, O +, O-

AB- can take AB-, B-, A-, O-

AB + can take AB +, AB-, B +, B-, A +, A-, O +, O-

This is a very important message that can benefit someone’s life, save someone’s life.

Effects of water

We know that water is very important but we do not know when water can be useful

Do you know

  A glass of water gives you many benefits during these times

 A glass of water Relaxes your limbs after running

 A glass of water Corrects your digestive system 30 minutes before meals

A glass of water Drinking before going to the washroom lowers your blood pressure

A glass of water Drinking before bed protects you from heart attack.

Share and support the life

Top Worlds Famous Waterfalls

Top Worlds Famous Waterfalls are following

  • Almere Falls located in California, USA Country.
  • Blue Nile Falls is located in Ethiopia.
  • Gocta Cataracts Falls located in Amazonas, Peru.
  • Gullfoss Falls is located in Gullfossi, Iceland.
  • Avalanche Basin Falls located in Montana, United States.
  • In Hordaland, Norway Brufossen Falls is located.
  • Balaifossen waterfall located in which Country? – Hordaland, Norway
  • In Hawaii, United States Haloku Falls is located.
  • Barron falls located in Queensland, Australia
  • Feather Falls is located in California, USA
  • Harrison Basin Falls located in Montana, United States
  • Stupendousness Falls located in Norway
  • Huangguoshu Waterfall located in Guizhou, China
  • Where is Colonial Creek Falls located in Washington, United States
  • Iguazu Falls located in Argentina
  • Dettifoss Falls located in Iceland
  • James Bruce Falls located in British Columbia, Canada
  • In Adelboden, Switzerland Engstligen Falls is located.
  • Johannesburg Falls located in Washington, United States
  • In Gavarnie, France Gavarnie Falls is located.
  • Angel Falls located in Venezuela
  • Kaieteur Falls located in Guyana
  • Kalambo Falls located in Zambia Tanzania Border
  • Kjelfossen Falls located in Gudvangen, Norway
  • Baatara gorge waterfalls located in Tannourine, Lebanon.
  • Dontefossen Falls located in Norway

Some Other international Waterfalls

Kjeragfossen Falls located in Rogaland, Norway

Comet Falls located in Washington, USA

Augrabies Falls located in which Country Orange River, South Africa

Chamberlain Falls located in New Zealand        

Ban Goic-Detian falls located in Country in Guangxi, China

Browne Falls located in South Island, New Zealand

Alfred Creek Falls located in Country Columbia, Canada

Where is Ouzoud Waterfalls located in Morocco

Mongefossen Falls located in Norway Country

Pu’uka’oku F’alls located in Hawaii, United States

 Mutarazi Falls located in Zimbabwe

Ramnefjellsfossen Falls located in Norway

Nachi Falls located in Nachikatsuura, Japan

Helmcken Falls located in Columbia, Canada

Lake Unknown Falls located in New Zealand

Sulphide Creek Falls located in California, USA

Olmaafossen Falls located in Norway

Sutherland Falls located in New Zealand

Olo’upena Falls located in Molokai, United States

In Norway Spirefossen Falls located.

Mana’wai’nui Falls located in Hawaii, United States

Tres Hermanas Falls located in Peru

Kukenaam, Salto Falls located in Venezuela

Seven Sisters Waterfalls located in Norway

Official Language of Countries

Different language are speak in different Countries. Official Language of Countries are


Language is a structured system for communication. This is the method for communication. The scientific knowledge of language is called linguistics.

  • In Pakistan Urdu is official language
  • India official language is Hindi
  • United States & United Kingdom Languages is English
  • Mandarin Chinese is Chinese language
  • Bangladesh language is Bengali
  • Japanese language is for Japan
  • Philippines speak Filipino
  • Singapore language is Malay, Tamil
  • Sri Lanka people speak Sinhala, Tamil
  • Taiwan speak Mandarin Chinese
  • Tajikistan language is Tajik (Tajik)
  • Thailand language is Thai
  • Turkey speak Turkish
  • Turkmenistan language is Turkmen
  • Uzbekistan language is Uzbek
  • Vietnam country language is Vietnamese
  • Nepali spoken language is in Nepal
  • Mongolia language is Khalkha Mongolian
  • Malaysia language is Malay
  • Lao speaks in Laos country
  • Kyrgyzstan language is Kyrgyz Russian
  • Korean South & North official language is Korean
  • Kazakhstan language is Kazak
  • Israel language is Hebrew, Arabic
  • Iran language is Farsi (Persian)
  • Indonesia language is Bahasa Indonesian
  • Georgian language is speaking in Georgia
  • Cyprus speaks Greek, Turkish
  • Cambodia language is Khmer
  • Burma country speak Burmese language
  • Brunei country language is Malay
  • Bhutan country language is Dzongkhag
  • Azerbaijan language is Azerbaijani
  • Armenia language is Armenian
  • Afghanistan language is  Pushto, Dari

Arabic Official language of Countries

Countries that official Language is Arabic are following

  • Saudi Arabia
  • UAE
  • Qatar language
  • Syria language
  • Yemen
  • Oman
  • Lebanon
  • Kuwait
  • Jordan
  • Iraq
  • Bahrain

These Countries official language is Arabic most of these countries are Islamic

Scientific Units used in Physics

Scientific Units that are used Physics are following

Ampere is unit of Electric current

Angstrom is unit of length for the measurement of wavelength

Bar is Unit of atmospheric pressure

Bel is Unit of the intensity of sound

Calorie is a measurement of the quantity of heat

candle power is the illuminating power of a source of light

centigrade is a unit of temperature

centimeter is unit of length

coulomb is a unit of electric charge

decibel is a unit of intensity

diopter is a unit of power of a lens

dyne is a unit of force

electron volt is a unit of energy

erg is a unit of work

Physics Scientific measurement Units

farad is a unit of electric capacity

faraday is unit of Electric charge

gauss is a unit of Magnetic induction

gram is a unit of mass

henry is a unit of induction

horsepower is a unit of power

joule is a practical unit of work

kg is a unit of mass

kilowatt is a unit of electrical power

knot unit of speed

kilowatt per hour is a practical unit of electrical power

lambert is a unit of brightness

light year is a unit of distance for measuring astronomical distance

liter is a unit of volume capacity

lumen is the luminous flux

lux is a unit of intensity of lamination

Maxwell is the magnetic flux

Meter is a unit of distance

Micro-farad is one million of a farad

millimicron is unit of length used in spectroscopy

newton is a unit of work

oersted is a unit of magnetic intensity

ohm is a unit of electrical resistance

poise is unit of viscosity

second is unit of time

volt is a practical unit of electric potential difference

watt is a unit of power

weber is a unit of magnetic pole strength

x.u is unit of length expressing x-ray wavelength

mole is the amount of substance

siemens is electric conductance

hertz is frequency

radian is plane angle

tesla is the magnetic flux density

pascal is pressure

sievert is radiation dose equaling

steradian is the solid angle

becquerel is the activity of a radionuclide

Rutherford is the rate of decay of radioactive material

Torr is a unit of pressure

Mho is unit of conductivity

Roentgen is radiation exposure x ray

International Important Days from June to October

Most of International Important Days in month of May, June, July, August, September & October are


  • June 4th is World Day of Innocent Children Victims of Aggression
  • June 5 is World Environment Day
  • June 7 is International Level Crossing Awareness Day
  • June 8 is World oceans Day
  • June 12 is World Day against Child Labour
  • June 14 is World Blood Donor day
  • June 17 is International Day to Combat Desertification and Drought
  • June 20 is World Refugee Day
  • June 23 is United Nations Public Service Day
  • June 23 is International widow’s day
  • June 26 is International Day against substance abuse and Illicit Trafficking
  • June 27 is International Diabetes Day


  • July 1 is National doctor’s Day
  • July 11 is World Population Day
  • July 12 is Malala Day
  • July 18 is Nelson Mandela International Day
  • July 28 is World Nature Conservation day
  • July 30 is International Day of Friendship


  • August 3 is Independence Day of Niger
  • August 5 is Independence Day of Upper Volta
  • August 9 is word day of the World’s Indigenous People
  • August 12 is International Youth Day
  • August 14 is Independence Day (Pakistan)
  • August 15 is Independence Day (India)
  • August 23 is International Day for the Remembrance of the slave traffic and its Abolition
  • August 29 is National Sports Day (Birthday of Dhyan Chand)


  • September 5 is Teacher’s Day (Radhakrishnan’s Birth Day)
  • September 7 is Forgiveness Day
  • September 8 is International Literacy Day
  • September 14 is Hindi day, World First Aid Day
  • September 16 is World Ozone Day
  • September 21 is International Day of Peace, World Alzheimer’s day
  • September 25 is Social Justice Day
  • September 27 is World Tourism Day


  • October 1 is International Day of Older Persons
  • October 2 is International Day of Non-Violence
  • October 3 is World Nature Day, World Habitat Day
  • October 4 is World Animal Day
  • October 5 is World Teacher’s Day
  • October 8 is Indian Airforce Day
  • October 9 is World Post Day
  • October 11 is International Girl Child Day
  • October 12 is World Arthritis Day
  • October 14 is World Standards Day
  • October 15 is World Students Day
  • October 16 is World Food day
  • October 17 is World Day for the Eradication of Poverty
  • October 20 is World Statistics Day
  • October 24 is United Nations Day
  • October 31 is World Thrift Day

These are International Important Days in month of May, June, July, August, September & October.

International Important Days from January to May

Most of International Important Days in month of January, February, March, April & May are

In January

  • January 1 is Global Family Day
  • January 15 is Army Day
  • January 23 is Netaji Subhash Chandra Bose’s birth anniversary
  • January 26 is Republic Day
  • January 26 is International Customs day
  • January 28 is Birth Anniversary of Lala Lajpat Rai
  • January 28 is Data Protection Day
  • January 30 is World Leprosy Eradication Day

In February

  • February 4 is World Cancer Day
  • February 5 is Kashmir Day
  • February 6 is International Day against Female Genital Mutilation
  • February 12 is Darwin Day
  • February 12 is World Day of the Sick
  • February 14 is Valentine’s Day
  • February 20 is the World Day of Social Justice
  • February 21 is International Mother Language Day
  • February 22 is World Scout Day
  • February 23 is World Peace and Understanding Day

In March

  • March 4 is World Day of the Fight Against Sexual Exploitation
  • March 8 is International Women’s’ Day
  • March 13 is World Kidney Day
  • March 13 is World Rotaract Day
  • March 15 is World Consumer Rights Day
  • March 20 is International Day of the Francophonie
  • March 20 is World Day of Theatre for youngsters and children
  • March 21 is World Sleep Day
  • March 21 is World Forestry Day
  • March 21 is International Day for the Elimination of racism.
  • March 22 is World Water Day
  • March 23 is World Meteorological Day
  • March 24 is World TB Day
  • March 24 is International Day for Achievers
  • March 25 is International Day of Remembrance – Victims of Slavery and Transatlantic Slave Trade
  • March 27 is World Drama Day

In April

  • April 2 is World Autism Awareness Day
  • April 7 is World Health Day
  • April 17 is World Hemophilia Day
  • April 18 is World Heritage Day
  • April 22 is Earth Day
  • April 23 is World Book and Copyright Day
  • April 25 is World Malaria Day
  • April 29 is International Dance Day

In May

  • May 1 is International Labour day
  • May 3 is Press Freedom Day
  • May 4 is Coal Miners day
  • May 8 is World Red Cross day
  • May 9 is Victory Day
  • May 11 is National Technology Day
  • May 12 is International Nurses day
  • May 14 is World Migratory day
  • May 15 is International Day of the Family
  • May 17 is World Information Society Day
  • May 21 is AntiTerrorism Day
  • May 31 is World No Tobacco Day

These are International Important Days in month of January, February, March, April & May

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