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KITCHEN CHEMISTRY Bijeta Roynath & Prasanta Kumar Sahoo

KITCHEN CHEMISTRY Bijeta Roynath & Prasanta Kumar Sahoo

Test Your Knowledge KITCHEN CHEMISTRY Bijeta Roynath & Prasanta Kumar Sahoo

1. The common cooking fuel, Liquefied Petroleum Gas 10. Which of the following could be produced by the gas (LPG), is a mixture of two hydrocarbons. These are: stove? (a) Methane and Butane (b) Propane and Butane (a) Nitrogen Oxides (b) Sulphur dioxides (c) Oxygen and Hydrogen (d) Hexane and Propane (c) Carbon monoxide (d) Dihydrogen oxide

2. Hydrocarbons in LPG are colourless and odourless. 11. Which of the following chemical is found in dish- Therefore, a strong smelling agent added to LPG washing detergent? cylinders to detect leakage is: (a) Carbon monoxide (b) Chlorine (a) Ethyl mercaptan (b) Nitrous oxide (c) Sulphur dioxide (d) Lithium (c) Hydrogen sulfide (d) Chloroform 12. Proteins help build our body and carbohydrates 3. Chemical irritant produced during chopping an provide energy to the body. The protein and ( cepa) which makes our eye weepy is: carbohydrate found in milk are: (a) Allinase (b) Sulfoxide (a) Albumin and maltose (b) Pepsin and sucrose (c) Syn-propanethial-S-oxide (d) Allyl mercaptan (c) Collagen and fructose (d) Casein and lactose

4. The powerful anti-inflammatory and antioxidant 13. Salt readily absorbs water from the surroundings. properties of haldi or turmeric (Curcuma longa) are Sprinkling salt on salad releases water from it after due to presence of: few seconds. The process is: (a) (b) Gingerol (a) Osmosis (b) Adsorption (c) Cymene (d) (c) Dehydration (d) Oxidation

5. The active ingredient in chilli peppers (Capsicum) 14. Washing hands before eating prevents illness which produces heat and burning sensation in the by killing germs. Which component of the hand mouth is: sanitizer helps to kill germs? (a) Lycopene (b) Capsaicin (a) Glycerine (b) Vitamin E (c) Carotene (d) Citric acid (c) Alcohol (d) All of these

6. Which of the following will help best to neutralize 15. Bacteria eat the sugars in the milk and produce an the burning sensation from chilli peppers? acid through the process of fermentation making the (a) Beer (b) Water milk sour. The acid is: (c) Milk (d) Table Sugar (a) Formic acid (b) Hydrochloric acid (c) Acetic acid (d) Lactic acid 7. The active compound present in tea and coffee that has stimulatory effect on brain is: 16. Lemon juice is one of the best natural cleaners due (a) Caffeine (b) Dopamine to its low pH and antibacterial properties. Presence (c) Serotonin (d) Nicotine of which of the following makes lemon such a good cleaner? 8. Foul smell of rotten egg is due to a stinky gas (a) Citric acid (b) Hydrochloric acid produced by bacteria present inside the egg. The (c) Formic acid (d) Carbonic acid gas is: (a) Hydrogen sulphide (b) Dihydrogen oxide Answers: (c) Phosphorus (d) Methane 1. (b) 2. (a) 3. (c) 4. (a) 5. (b) 6. (c) 7. (a) 8. (a) 9. (b) 10. (c) 11. (b) 12. (d) 13. (a) 14. (c) 15. (d) 16. (a) 9. What chemical might be found in canned food in the kitchen? Contributed by Bijeta Roynath, P-T16, Beside ROMI, OT Road, Police Line Square, Balasore-756001, Odisha. Email: (a) Arsenic (b) Lead [email protected] (c) Chlorine (d) Mercury Prasanta Kumar Sahoo, Lecturer in Zoology, Kendrapara Autonomous College, Kendrapara-754211, Odisha. Email:[email protected]

62 | Science Reporter | June 2019 NOBEL PRIZES Harshitha

1. Who is the only person to have won a 10. Who was awarded the in twice? twice? (a) (b) (a) Ada Yonath (b) Martin Chalfie (c) (d) (c) Frederick Sanger (d)

2. Who is the youngest Nobel Laureate in physics? 11. Who was the first Israeli woman to be awarded a (a) (b) Nobel Prize? (c) (d) (a) (b) Dorothy Crowfoot Hodgkin 3. Who won two unshared Nobel Prizes, in two different (c) Ada Yonath disciplines? (d) (a) (b) Linus Pauling (c) Martin Chalfie (d) 12. Which couple won the Nobel Prize in for the discovery of cells that constitute a positioning 4. Who is the first Japanese to have won a Nobel Prize? system in the brain? (a) (b) (a) Moser (b) Cori (c) Hiroshi Amano (d) (c) Mayer (d) Bohr

5. I am a Russian who shared the 1958 Nobel Prize 13. Who is the oldest Nobel laureate in Physics? in Physics for discovering an effect which is known (a) Doris Lessing (b) Raymond Davis by my name. It is the emission of bluish light when (c) Peyton Rous (d) Shuji Yamanaka a particle moves faster than the speed of light in a medium. It forms the basis of many particle 14. Who is the only Nobel Laureate to reach the age of detectors. 100? (a) Gabriel Lipmann (b) Pavel A. Cherenkov (a) Rita Levi Montalcini (b) Youyou (c) (d) (c) (d)

6. Who won the Nobel Prize for the discovery of 15. Who won the Nobel Prize for the discovery of antimatter? transposons? (a) Carl Anderson (b) (a) Linda Buck (b) Francois Sinnousi (c) (d) John Bardeen (c) Barbara McClintock (d)

7. Who is the first Indian to have won a Nobel Prize in 16. Who won the for the design Chemistry? of the electron microscope? (a) Venkataraman Ramakrishnan (a) (b) (b) CV Raman (c) Shuji Nakamura (d) (c) Amartya Sen (d) 17. In which year was the Nobel Prize in Physiology awarded for discoveries in the circadian rhythm? 8. Who is the first Asian to have won a Nobel Prize in (a) 2013 (b) 2000 Physiology? (c) 2015 (d) 2017 (a) Subramanyam Chandrasekhar (b) Har Gobind Khorana Answer: (c) Rabindranath Tagore 1. (c) 2. (a) 3. (b) 4. (a) 5. (b) 6. (a) 7.(a) (d) CV Raman 8. (b) 9. (c) 10. (c) 11. (c) 12. (a) 13. (b) 14.(a) 9. Who is the first Chinese woman Nobel laureate? 15. (c) 16. (a) 17. (d) (a) Chen Ning Yang (b) Tsuang Dao Lee Contributed by Harshitha, Flat 202, MIG 209, Balaji Nagar, (c) (d) Leo Esaki Kukatpally, Hyderabad-500072. Email: [email protected]

June 2019 | Science Reporter | 63

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