866. Which chemical is used for the preservation of a biological specimen? Formalin  867. What are the constituent elements of sugar?  Carbon, Hydrogen and Oxygen 868. Which type of glass can cut off ultraviolet rays? Crookes glass  869. Which process …

866. Which chemical is used for the preservation of a biological specimen? Formalin  867. What are the constituent elements of sugar?  Carbon, Hydrogen and Oxygen 868. Which type of glass can cut off ultraviolet rays? Crookes glass  869. Which process …

831. What is the chemical name of Ajinomoto?  Monosodium Glutamate 832. What is known as ‘the wonder child of electronics’? Transistors  833. Which acid is present in cola? Phosphoric Acid  834. Detergents are sodium or potassium salts of —————- Sulphonic …

796. What is the use of a commutator?  To change the direction of electric current  797. Which is known as ‘the stress hormone’ in plants? Abscisic acid  798. What are the examples for the day-neutral plants?  Tomato & cotton 799. …

726. A person suffering from colour blindness cannot distinguish which colours? Red& green  727. Which is the chief nitrogenous waste in humans? Uric acid  728. Who is known as ‘the father of cloning’? Ian Wilmut  729. Which hormone promotes blood …

691. Which element is used to coat the photocopying drum of Xerox machine?  Selenium  692.  Which acid is present in colas?  Phosphoric Acid  693. Which optical filter glass allows ultraviolet & infrared light to pass through while blocking most visible …

656. Which chemical property of an element is described by the Pauling scale? Electronegativity  657. What is the full form of the LED? Light Emitting Diode  658. Which metal is used in the catalytic converters in cars to reduce the …

621. Which chemically inactive gases are usually filled in bulbs to prolong the life of filament? Nitrogen & Argon 622. What is the SI unit of electric power?  Watt  623. What is the name of the device that reverses the …

586. The level of glucose in human blood is ……mg per 100ml of blood:  Answer:  80-120  587. Bone is used as fertilizer as it contains:  Answer:  Phosphorus  588. The constituent essential for the growth of children: Answer:  Protein  589. The …

556. A solid piece of iron sinks in water but float s in mercury. This is because of the (a) Average density of water and mercury is less than that of iron (b) Density of iron is less than that …

526. If you wish to have the maximum value of in respect of Vitamin D, which of the following would you choose? (a) Cheese (b) Meal (c) Milk (s) Rice Answer: (a) 527. All of the following foods lack vitamin …

496. A substance used for destroying micro-organisms and rendering the material sterile is called (a) An antibody (b) An antitoxin (c) An antigen (d) A  disinfectant Answer: (d) 497. Which of the following organisms causes Tuberculosis? (a) Bacillus (b) Cocci …

461. What per cent of the human body is the brain:  Answer: 2  462. The basis of Protein:  Answer: Amino acid  463. Tidal volume is related to:  Answer: Lungs  464. The plasma protein that helps to clot of blood: Answer: …

426. Which sense organ is most developed in birds? Eye 427. Vermiculture is related to: Earth Worm 428. Silver Revolution is related to the enhanced production of: Poultry 429. White Revolution is related to the enhanced production of: Milk 430. …

386. The colour of blood in annelids: Green 387. Ambergreese is obtained from: Whale 388. Ranikhet disease of poultry is caused by: Virus 389. The chemical helpful for fireflies for bioluminescence: Luciferin 390. The chemical helps ants to walk in …

351. Which is called ‘tree of heaven’? Walnut 352. Most suitable bio fertilizer for rice field: Azolla 353. Cross-pollination fertilization between two varieties: Hybridization 354. Another name for reduction division: Meiosis 355. The edible part of Pea- Cotyledon of seeds …

321. In breeder reactors, uranium-238 is converted into – Plutonium-239 322. The process of elimination of water from any system is called. – dehydration 323. Chemotherapy deals with – The study and uses of chemicals in the cure of diseases. …