Rajesh

Samacheer Book Back Questions And Answers For Science Standard 9 “World of Microbes“ I. Choose the correct answer: 1. Which of the following is transmitted through air? (a) Tuberculosis (b) Meningitis (c) Typhoid (d) Cholera 2. One of the means…

Samacheer Book Back Questions And Answers For Science Standard 9 “Nutrition and Health“ I. Choose the correct answer: 1. The nutrient required in trace amounts to accomplish various body functions is _____. (a) carbohydrate (b) protein (c) vitamin (d) fat…

Samacheer Book Back Questions And Answers For Science Standard 9 “Organ Systems in Animals“ I. Choose the correct answer: 1. Which of the following is not a salivary gland? (a) Sublingual (b) Lachrymal (c) Submaxillary (d) Parotid 2. Stomach of…

Samacheer Book Back Questions And Answers For Science Standard 9 “Plant Physiology“ I. Choose the correct answer:1. The tropic movement that helps the climbing vines to find a suitable support is _____.(a) Phototropism(b) Geotropism(c) Thigmotropism(d) Chemotropism 2. The chemical reaction…

Samacheer Book Back Questions And Answers For Science Standard 9 “Organisation of Tissues“ I. Choose the correct answer: 1. The tissue composed of living thin walled polyhedral cell is (a) parenchyma (b) pollenchyma (c) pclerenchyma (d) None of above 2.…

Samacheer Book Back Questions And Answers For Science Standard 9 “Animal Kingdom“ I. Choose the correct answer: 1. Find the group having only marine members. (a) Mollusca (b) Coelenterata (c) Echinodermata (d) Porifera 2. Mesoglea is present in (a) Porifera…

Samacheer Book Back Questions And Answers For Science Standard 9 “Applied Chemistry“ I. Choose the correct answer:1. One Nanometre is(a) 10-7 metre(b) 10-8 metre(c) 10-6 metre(d) 10-9 metre 2. The antibiotic Penicillin is obtained from _____.(a) plant(b) microorganism(c) animal(d) sunlight…

Samacheer Book Back Questions And Answers For Science Standard 9 “Carbon and its Compounds“ I. Choose the correct answer:1. A phenomenon in which an element exists in different modification in same physical state is called(a) isomerism(b) allotropy(c) catenation(d) crystallinity 2.…

Samacheer Book Back Questions And Answers For Science Standard 9 “Acids, Bases and Salts“ I. Choose the correct answer:1. Zn + 2 HCl → ZnCl2 + _____↑a. H2b. O2c. CO2 2. Apple contains malic acid. Orange contains _____.a. citric acidb.…

Samacheer Book Back Questions And Answers For Science Standard 9 “Chemical Bonding“ I. Choose the correct answer: 1. Number of valence electrons in carbon is (a) 2 (b) 4 (c) 3 (d) 5 2. Sodium having atomic number 11, is…