(a)Sodium benzoate is a preservative. Give one example of each. Question 9: (i) Those chemicals which do not add calories and do not increase blood glucose are called artificial sweetening agent, e.g.
5. Answer : BiologyMathsPhysicsChemistryNCERT Solutions, Kerala Syllabus 9th Standard Physics Solutions Guide, Kerala Syllabus 9th Standard Biology Solutions Guide, Short Answer Type Questions [I] [2 Marks], 2o11 – Very Short Answer Type Question [1 Mark], Ekarthak Shabd in Hindi | एकार्थक शब्द की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Tatsam Tadbhav Shabd in Hindi | तत्सम तद्भव शब्द की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Shabd Vichar in Hindi | शब्द विचार की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Kriya Visheshan in Hindi | क्रिया विशेषण की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Paryayvachi Shabd in Hindi | पर्यायवाची शब्द की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Anek Shabdon Ke Liye Ek Shabd in Hindi | अनेक शब्दों के लिए एक शब्द की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Chhand in Hindi | छन्द की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Anekarthi Shabd in Hindi | एकार्थक शब्द की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Vilom Shabd in Hindi | विलोम शब्द (Antonyms) की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Samvaad Lekhn in Hindi(Dialogue Letter)-संवाद-लेखन, Vismayadibodhak in Hindi | विस्मयादिबोधक (Interjection) की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Samuchchay Bodhak in Hindi | समुच्चयबोधक (Conjunction) की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Sambandh Bodhak in Hindi | संबंधबोधक (Preposition) की परिभाषा एवं उनके भेद और उदाहरण (हिन्दी व्याकरण), Patra lekhan in Hindi – पत्र-लेखन (Letter-Writing) – Hindi Grammar, हिन्दी निबंध – Essay in Hindi Writing- Hindi Nibandh. Question 44:
(iii) Refer Ans. (ii) Synthetic detergents work well even with hard water, therefore, they are more effective than soaps. alitame. (i) Mr. Amit is kind person who helps his friend in need. to Q.22 (iii).
Answer : (ii) Refer Ans. Ranitidine or NaHC03 or a mixture of Al(OH)3 and Mg(OH)2 is used as antacid.
Answer : Please visit using a browser with javascript enabled.
Answer : (i) It is because soaps react with Ca2+ and Mg2+ present in hard water to form scum. (ii) Antibiotics They all resolved this issue by strictly banning the junk food in schools and to introduce healthy snacks and drinks’like soup, lassi, milk, etc. Let's take a look! soluble vitamin. They give relief from pain. (ii) Aspirin
(iii) Sweetening agents [1997]. Question 11: (iii) Refer Ans. (a)Chemotherapy: Chemotherapy is the science in which chemicals are used in the treatment of diseases due to bacterial invasion. Seeing the growing cases of diabetes and depression among young children, Mr. Chopra, the principal of one reputed school organized a seminar in which he invited parents and principals. (i) Non-ionic detergents (ii)Aspartame is unstable at cooking temperature. Answer :
(iii) Refer Ans. (ii) What are the main constituents of dettol? Explain the following types of substances with one suitable example, for each case: (iii) Food preservatives Tranquilizers
Also, this page requires javascript.
They also decided to make compulsory half an hour of daily physical activities for the students in the morning assembly.
Give an example. For example, Sodium Lauryl Sulphate.
Question 13: Answer :
They all resolved this issue by strictly banning junk food in schools and introducing healthy snacks and drinks like soup, lassi, milk, etc. Soaps are generally sodium or potassium salts of long chain fatty acids. Important Questions for Class 12 Chemistry Chapter 16 Chemistry in Everyday Life Class 12 Important Questions Chemistry in Everyday Life Class 12 Important Questions Very Short Answer Type Question 1. He is helpful and focused person and knows how to achieve his goal. Answer : aspirin. 19. How do antiseptics differ from disinfectants?
[2009], Tranquilizer are the chemicals that reduce anxiety and 'mental tension. Question 31: Explain the following terms giving one example for each: Well most of us haven’t even noticed that there is, in fact, an expiration date on that bottle. 0.2% phenol, 1% phenol to Q.37 (i). If a child of class 12 hopes to give their best for the upcoming board exams and competitive exams, it will be really useful to learn and revise with the help of Chemistry in everyday life class 12 important questions. pill"? to Q.43 (i). (ii) Disinfectants Cationic detergents are bromides or acetate of quarternary ammonium salts of tertiary amines. If you are studying chemistry then you must have wondered about the importance of chemistry in everyday life.
These chemicals destroy the micro-organisms without affecting to any material extent, the tissues (of the host).
Question 14:
This mock test of Test: Chemistry In Everyday Life - From Past 28 Years Questions for Class 12 helps you for every Class 12 entrance exam. (iii) Refer Ans. (iii) Enzymes When we fall in love, our brain suffers some changes and also certain chemical compounds are released. Ranitidine, Avil. What are the values (at least two) displayed by Mr. Chopra? Equanil, seconal, etc. These are not applied to living tissues. Also Access CBSE Class 12 chemistry Sample Papers and class 12 Chemistry previous year question papers. JEE Mains aspirants may download it for free, and make a self-assessment by solving the JEE Main Chemistry in Everyday Life Important Questions Chemistry. Answer : Question 43: Question 1: For example, Polyethylene glycol stearate. Give one example of each of them: State a reason of the following statement: (b)While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other? Milk of Magnesia [Mg(OH)2], Ranitidine (Zantac), etc. Answer the following questions (ii) Synthetic detergents There are two kinds of rays from the sun which are particularly bad for us, UV-A & UV-B.
Answer : (iii) Why is it not advisable to take sleeping pills without consultation with the doctor? Answer :
(i) Food preservatives (i)Disinfectants are chemicals which kill micro-organisms in drains, sick rooms, etc., e.g. to Q.37 (ii). sodium alkylbenzene sulphonate.
With regular Yoga sessions, Mr. Naresh is now a happy and relaxed man. This signifies the role of chemistry in our daily life.
The role of phosphate in detergent powder is to, The oxidant which is used as an antiseptic is, Bithional is generally added to the soaps as an Mamta, a housewife lives in Sonepat (Haryana). The whole molecule acts as a detergent. to Q.43 (i). Chlorine and iodine are used as strongdisinfectants. (ii) Those chemical which kill micro-organisms in drains, sick rooms and are harmful for tissues are called disinfectant, e.g. Answer : Chloramphenicol which is used in both typhoid and meningitis. (i) Those drugs which counteract the effect of histamines causing allergy are called antihistamines, e.g. Chemistry is indeed in our everyday. Which of the following is water-soluble? Your email address will not be published. students definitely take this Test: Chemistry In Everyday Life - From Past 28 Years Questions exercise for a better result in the exam. State reasons for the following occurrences: