12th Physics , Chapter- 7, (Alternating Current ) 1. Wattless current is obtained in a circuit containing- (a) Inductor (b) Capacitor (c) (a) or (b) (d) both (a) & (b) (c) (a) or (b) Answer 2. AC generator works on the principle of- (a) Self induction (b) Photoelectric effect (c) Mutual induction. (d) None of …
11th Biology, Chapter- 22, (Chemical Coordination and Integration ) 1. Which of the following statement is Incorrect? (a) Endocrine glands are called as Ductless glands. (b) They (Endocrine glands) secretes their secretions directly into the blood (c) Hormones are Non-nutrient chemicals which are produced in trace amount. (d) Hormones acts as Intercellular and Intracellular messengers. …
11th Biology, Chapter- 19, (Excretory Products and their Elimination) 1. Which of the following is most toxic? (a) Ammonia (b) Urea (c) Uric acid (d) Guanine (a) Ammonia Answer 2. Which of the following statements is/are Incorrect? (a) Ammonia is most toxic form and requires large amount of water for its elimination. (b) Aquatic animals …
11th Biology, Chapter- 17, (Breathing & Exchange of Gases ) 1. Lungs have a large number of narrow tubes called (a) Alveolar ducts (b) Bronchi (c) Bronchioles (d) Alveoli (c) Bronchioles Answer 2. Respiratory movements are controlled by (a) Crura Cerebri (b) Medulla Oblongata (c) Cerebrum (d) Cerebellum (b) Medulla Oblongata Answer 3. Pleura is …
11th Biology, Chapter- 14, (Respiration In Plants) 1. Electron Transport System (ETS) occurs in the (a) Nucleus of electron transport particles (b) In the cytoplasm (c) Inner surface of the inner membrance of mitochondria of electron transport particles (d) Outer surface of the outer membrane of mitochondria of electron transport particles (c) Inner surface of …
11th Biology, Chapter- 12, (Mineral Nutrition ) 1. Technique of growing plants in nutrient solution in complete absence of soil is called as: (a) Hydroponics. (b) Aquaponics (c) Horticulture (d) Aquaculture (a) Hydroponics. Answer 2. Father of Hydroponics: (a) Ernst mayer (b) Lavosier (c) Blackman (d) Julius von sachs (d) Julius von sachs.. Answer 3. …
11th Biology, Chapter- 10, (Cell Cycle and Cell Division ) 1. Human cells in culture show a cell cycle to be completed in approximately a) 42 hours b) 24 hours c) 24 minutes d) 24 seconds b) 24 hours Answer 2. Yeast cell divides once in approximately every a) 90 minutes b) 9 minutes c) …