Science : Chapter 22 : World of Microbes I . Choose the correct answer. 1. Mycology is the branch of biology that deals with the study of Ans : fungi 2. The major constituent of vinegar is Ans : acetic acid 3. Bacteria involved in curd formation is Ans : Lactobacillus acidophilus 4. Which of […]

Science : Chapter 21 : Nutrition and Health I. Choose the best answer1. The nutrient required in trace amounts to accomplish various body functions is _______________ Ans : Vitamin 2. The physician who discovered that scurvy can be cured by ingestion of citrus fruits is _______________ Ans : James Lind 3. The sprouting of onion

Science : Chapter 20 : Organ Systems in Animals I. Choose the correct answer 1. Which of the following is not a salivary gland? Ans : lachrymal 2. Stomach of man mainly digests __________ Ans : proteins 3. To prevent the entry of food into the trachea, the opening is guarded by ___________ Ans :

Science : Chapter 19 : Plant Physiology I. Multiple choice Questions: 1. A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to ___________. Ans : water and light 2. The tropic movement that helps the

Science : Chapter 18 : Organisation of Tissues Section A Ia. Match the following 1. Sclereids Chlorenchyma 2. Chloroplast Sclerenchyma 3. Simple tissue Collenchyma 4. Companion cell Xylem 5. Trachieds Phloem Ans : 1 – B, 2 – A, 3 – C, 4 – E, 5 – D Ib. Match the contents of Column I,

Science : Chapter 17 : Animal Kingdom I. Choose the correct answer 1. Which is not an insect? Ans; Spider 2. Find the group having only marine members Ans; Echinodermata 3. Mesoglea is present in Ans ; Coelenterata 4. Dysentery is caused by Ans; Entamoeba 5. Which one of the following pairs is not a

Science : Chapter 16 : Applied Chemistry I. Choose the correct answer: 1. One Nanometre is Ans : 10-9 metre 2. The antibiotic Penicillin is obtained from ______________ Ans : microorganism 3. 1% solution of Iodoform is used as Ans : antiseptic 4. The cathode of an electrochemical reaction involves ___________ Ans : catenation 5. The

Science : Chapter 15 : Carbon and its Compounds I. Choose the Correct Answer 1. A phenomenon in which an element exists in different modification in the same physical state is called 2. Number of free electron(s) in each carbon of graphite is 3. The carbon atoms in fullerene are arranged in mixed 4. Carbon

Science : Chapter 14 : Acids, Bases and Salts I. Choose the correct answer 1. Zn + 2 HCl → ZnCl2 + …↑(H2, O2, CO2) Ans : H2 2. Apple contains malic acid. Orange contains (citric acid, ascorbic acid) Ans : ascorbic acid 3. Acids in plants and animals are organic acids. Whereas Acids in rocks

Science : Chapter 13 : Chemical Bonding I. Choose the correct answer: 1. Number of valence electrons in carbon is Ans : 4 2. Sodium having atomic number 11, ready to ___________________ electron/electrons to attain the nearest Noble gas electronic configuration. Ans : lose one 3. Atoms having 1,2 or 3 electrons in its valence