Sunday, December 30, 2018

Nobel Prize in Chemistry 1915

The Nobel Prize in Chemistry 1915 was awarded to R.M. Willstätter for his study and researches on plant pigment chorophyll.


Source: www.nobelprize.org

Science Quiz - 15

1. In the treatment of Cancer which allotrope of Carbon is used ?
2. Which allotrope of carbon has the highest hardness and thermal conductivity ?

Saturday, December 29, 2018

Nobel Prize in Chemistry 1914

The Nobel Prize in Chemistry 1914 was awarded to Theodore William Richards for his accurate determinations of the atomic weight of  chemical elements.


Source: www.nobelprize.org

Science Quiz - 14

1. Which form of Carbon is used for the purification of gases ?
2. Which isotope of Carbon are used in lead pencil ?

Nobel Prize in Chemistry 1913

The Nobel Prize in Chemistry 1913 was awarded to Alfred Werner for new field of Inorganic Chemistry i.e. Coordination chemistry.


Source : www.nobelprize.org

Science Quiz - 13

1. Which is the radio isotope of carbon ?
2. Which allotrope of Carbon is used in LEDs Smart phones and other electronic devices ?

Friday, December 28, 2018

Nobel Prize in Chemistry 1912

The Nobel Prize in Chemistry 1912 was awarded to Victor Grignard for the discovery of the Grignard reagent, and Paul Sabatier for his method of hydrogenating organic compounds in the presence of finely disintegrated metals.

Source: www.nobelprize.org

Science Quiz - 12

1. Least reactive allotrope of phosphorus is _________ ?
2. Which allotrope of phosphorus is used in chemiluminescence ?

Thursday, December 27, 2018

Nobel Prize in Chemistry 1911

The Nobel Prize in Chemistry 1911 was awarded to Marie Curie, née Sklodowska for the discovery of the elements radium and polonium.


Source: www.nobelprize.org

Science Quiz - 11

1. What is the name of Radioactive Halogen ?
2. Which disease is caused by the deficiency of Iodine ?

Wednesday, December 26, 2018

Nobel Prize in Chemistry 1910

The Nobel Prize in Chemistry 1910 was awarded to Otto Wallach in the field of alicyclic compounds.

Source: www.nobelprize.org

Nobel Prize in Chemistry 1906

The Nobel Prize in Chemistry 1906 was awarded to Henri Moissan for investigation and isolation of the element fluorine.

Source: www.nobelprize.org

Science Quiz - 10

1. Which gas used in swimming pool as a disinfectants?
2. What is the atomic mass of chlorine?

Answers

1. Chlorine
2. 35.5 amu

Monday, December 24, 2018

Nobel Prize in Chemistry 1909

The Nobel Prize in Chemistry 1909 was awarded to Wilhelm Ostwald for his work on catalysis and for his investigations of principles of chemical equilibria and rates of reaction.

Source: www.nobelprize.org

Science Quiz - 9

1. What is the chemical formula of sulphur ?
2. Which type of smell found in H2S gas ?

Answers

1. S8
2. Rotten Egg smell (Black salt smell)

Sunday, December 23, 2018

Nobel Prize in Chemistry 1908

The Nobel Prize in Chemistry 1908 was awarded to Ernest Rutherford for his investigations into the disintegration of the elements, and the chemistry of radioactive substances Rutherford also proposed the Atomic Model.

Source: www.nobelprize.org

Science Quiz - 8

1. What is the color of liquid OXYGEN?
2. What is the smell of OZONE gas?

Answers
1. Pale Blue
2. Fishy smell

Saturday, December 22, 2018

Nobel Prize in Chemistry 1907

The Nobel Prize in Chemistry 1907 was awarded to Eduard Buchner for his biochemical researches and discovery of cell-free fermentation.


Source: www.nobelprize.org

Science Quiz - 7

1.How many percentage of Nitrogen in Earth Atmosphere?
2.What is the Boiling point of Nitrogen?

Answers

1. 78.09 %
2. -195.8 degree celsius

Friday, December 21, 2018

Science Quiz - 6

1.What is name of the radioactive inert gas?
2.What is the symbole of krypton ?

Answers

1. Radon
2. Kr

Thursday, December 20, 2018

Nobel Prize in Chemistry - 1905

The Nobel Prize in Chemistry 1905 was awarded to J.F. Wilhelm Adolf von Baeyer for the synthesis of Organic dyes and hydroaromatic compounds.


Source: www.nobelprize.org

Science Quiz - 5

1. Which Inert Gas is filled in Bulbs?
2. Which Gases are used for breathing in underwater diving?

Answers
1. Argon
2. Helium

Wednesday, December 19, 2018

Science Quiz - 4

1. Which Inert gas is used in Advertising signals ?
2. Which Inert gas form compounds ?

Answers

1. Neon
2. Xenon

Nobel Prize in Chemistry - 1904

The Nobel Prize in Chemistry 1904 was awarded to Sir William Ramsay for the discovery of the inert gaseous elements (Ne, Ar, Kr and Xe) in air.


Source: www.nobelprize.org

Nobel Prize in Chemistry - 1903

The Nobel Prize in Chemistry 1903 was awarded to S. August Arrhenius in recognition  to his electrolytic theory of dissociation.


Source: www.nobelprize.org

Nobel Prize in Chemistry - 1902

The Nobel Prize in Chemistry 1902 was awarded to H.Emil Fischer for his research on sugar and purine syntheses.


Source: www.nobelprize.org

Nobel Prizes in Chemistry - 1901

The Nobel Prize in Chemistry 1901 was awarded to J.H.Van ‘t Hoff for the discovery of the laws of chemical dynamics and osmotic pressure.


Source: www.nobelprize.org

Science Quiz - 3

  1. Which of the following metals can be found in a pure state in nature?
    a) Lithium
    b) Iron
    c) Gold
    d) Aluminum
  2. In refrigerators, the liquid used as refrigerant is
    A. super-cooled water
    B. liquid ammonia
    C. liquid nitrogen
    D. liquid carbon dioxide

Answers

1. (c) Gold
2. (b) liquid ammonia

Science Quiz - 2

१. एक द्रव धातु (liquid metal) का नाम बताइये ?
२. एक द्रव अधातु (liquid non-metal) का नाम क्या है ?
अपने उत्तर बताइए |

Answer

1. Mercury
2. Bromine

Science Quiz - 1

१. सबसे हलकी धातु (Lightest Metal) का नाम क्या है ?
२. सबसे भारी धातु (Heaviest Metal) का नाम क्या है ?
अपने उत्तर बताइए |

Answer

1. Lithium
2. Osmium