Description : Hydrazine is largely used (A) As a starting material for 'hypo' (B) In photographic industry (C) As rocket fuel (D) In printing industry
Last Answer : (C) As rocket fuel
Description : Hydrazine (N2H4 ) is used mainly as a/an (A) Explosive (B) Rocket fuel (C) Detergents additive (D) None of these
Last Answer : (B) Rocket fuel
Description : A mixture of chlorine & sodium bromide acts as a/an (A) Insecticides (B) Analgesic drug (C) Fire retardant (D) Hydrogenation catalyst
Last Answer : (C) Fire retardant
Last Answer : Glass fiber is used.
Description : What material is a natural Fire retardant ?
Last Answer : There are two main types of fire retardant material that are used in clothing. Those materials are nomex and cotton. These materials prevent the fire from spreading or melting, so once the material is burned up the fire dies.
Description : Fibre glass (A) Retains heat-longer (B) Has a higher strength to weight ratio (C) Is shock proof and fire retardant (D) All the above
Last Answer : Answer: Option D
Description : The most commonly used chemical coagulant in water treatment is (A) Ferrous sulphate (B) Alum (C) Lime (D) Hydrazine
Last Answer : (B) Alum
Description : Hydrazine is used in water treatment for the removal of (A) Colloidal impurities (B) Dissolved oxygen (C) Turbidity (D) Chlorinous taste
Last Answer : (B) Dissolved oxygen
Description : The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters in a thermal power plant boiler is the (A) Water alkalinity & leakage (B) Hydrazine addition during ... treatment (C) Release of non-condensable gas from water in the boiler (D) Scale formation
Last Answer : (C) Release of non-condensable gas from water in the boiler
Description : Which of the following is the most widely used disinfectant in water treatment? (A) Chlorine (B) Irradiation of water by ultraviolet light (C) Cation exchanger (D) Coagulation
Last Answer : (A) Chlorine
Description : Ultraviolet rays can be used in water treatment as – (1) Flocculator (2) Precipitator (3) Hydrolyser (4) Disinfectant
Last Answer : (4) Disinfectant Explanation: UV radiation can be an effective viricide and bactericide. Disinfection using UV radiation is commonly used in wastewater treatment applications and is finding an increased usage in drinking water treatment.
Description : Ultraviolet rays can be used in water treatment as (1) Flocculator (2) Precipitator (3) Hydrolyser (4) Disinfectant
Last Answer : Disinfectant
Description : Corrosion in boilers can be prevented by (A) Deaeration of feed water (B) Enhancing pH of feed water by adding alkali (C) Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen and prevents corrosion (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Anion exchanger is regenerated usually with (A) NaOH (B) H2SO4 (C) Hydrazine (D) Alum solution
Last Answer : (A) NaOH
Description : Cation exchanger is regenerated usually with (A) NaOH (B) H2SO4 (C) Hydrazine (D) Alum solution
Last Answer : (B) H2SO4
Description : Are there any curtains that are flame retardant?
Last Answer : Yes, most department stores offer curtains made of flame resistant materials.
Description : is this flame retardant?
Last Answer : All the metal components should withstand extreme heat; as for the foam seat cushion, I wouldn't expect much.
Description : Growth retardant type antitranspirents is
Last Answer : Ans.Cycocel (CCC) (VIII) Weed Management
Description : A rocket is fired vertically from the ground with a resultant vertical acceleration of 10 m/sec the fuel is finished in one minute and it continues to move up. The maximum height reached will be a.2 km b.20 km c.36 km d.10 km e.80 km
Last Answer : a. 2 km
Last Answer : Nitric acid is used.
Description : What is the effect on the body of rocket fuel in cigarettes?
Last Answer : Need answer
Description : The element used as a rocket fuel?
Last Answer : Liquid Hydrogen
Description : Which of the following chemicals is not found in tobacco smoke? A. Chlorine bleach B. Rocket fuel C. Nail polish remover (Answer) D. Barbecue lighter fluid
Last Answer : C. Nail polish remover (Answer)
Description : A two-stage rocket attains a velocity of 3,000 meters per second when it drops the first stage and ignites the second. It consumes 1 kilogram of fuel per second and its exhaust speed is 2,000 meters per second. ... ? w) 2,000 Newtons x) 3,000 Newtons y) 2,000 Newton-seconds z) 3,000 Newton-seconds
Last Answer : ANSWER: W -- 2,000 NEWTONS
Description : Hydrazine `N_(2)H_(4)` acts as a reducing agent. To prepare 100 ml of 2 N hydrazine solution, the weight required will be
Last Answer : Hydrazine `N_(2)H_(4)` acts as a reducing agent. To prepare 100 ml of 2 N hydrazine solution, the weight required will ... B. 1.6 g C. 3.2 g D. 0.8 g
Description : What happens when urea is treated with hydrazine? (a) Biuret is formed (b) Semicarbazide is formed (c) Carbon dioxide and nitrogen is formed (d) Acetamide is formed
Last Answer : Semicarbazide is formed
Description : A hydrazone will result from the reaction of hydrazine with (a) a phenol (b) an aldehyde (c) an alcohol (d) an acid
Last Answer : an aldehyde
Description : Acetone undergoes reduction with hydrazine in the presence of NaOH to form propane. This reaction is known as (a) Clemmensen reduction (b) Wolf-Kishner reduction (c) Rosenmund reduction (d) Reformatsky reaction
Last Answer : Wolf-Kishner reduction
Description : The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? (A) Chlorine (B) Alkalis (C) Benzene hexachloride (D) Alkyl benzene sulphonate (ABS)
Description : common disinfectant used in village wells for disinfection of water is (A) Free chlorine (B) Bromine (C) Iodine (D) Potassium permanganat
Last Answer : Option D
Description : A common disinfectant used in village wells for disinfection of water is (A) Free chlorine (B) Bromine (C) Iodine (D) Potassium permanganate
Description : A substance produced by a living organism and capable of antimicrobial activity is called a/an (A) Antibiotic (B) Antiseptic (C) Disinfectant (D) None of these
Last Answer : (A) Antibiotic
Description : The main use of HCl is in the (A) Drilling of petroleum wells and pickling of steel sheets (B) Manufacture of cationic detergent (C) Treatment of spent fuel of nuclear reactor (D) None of these
Last Answer : (A) Drilling of petroleum wells and pickling of steel sheets
Description : Which disinfectant cannot be used in drinking water?
Last Answer : Which disinfectant cannot be used in drinking water? A. Chlorine B. Ozone C. Chloramine D. Phenyl
Description : A gas used as a disinfectant in drinking water is - (1) Hydrogen (2) Oxygen (3) Fluorine (4) Chlorine
Last Answer : (4) Chlorine Explanation: Water chlorination is the process of adding chlorine or chlorine compounds such as sodium hypochlorite to water.
Description : Bleaching powder is used in drinking water as a/an – (1) disinfectant (2) antibiotic (3) antiseptic (4) coagulant
Last Answer : (1) disinfectant Explanation: Bleach refers to a number of chemicals which remove colour, whiten or disinfect, often via oxidation. Bleaches are used as household chemicals to whiten clothes and ... to control bacteria, viruses and algae and in any institution where sterile conditions are needed.
Description : Which element is used as a disinfectant; as a bleaching agent and to purify water?
Last Answer : Chlorine
Description : The most ideal disinfectant used for drinking water throughout the world, is (A) Alum (B) Lime (C) Chlorine (D) Nitrogen
Last Answer : (C) Chlorine
Description : Bleaching powder is used in drinking water as a/an (1) disinfectant (2) antibiotic (3) antiseptic (4) coagulant
Last Answer : disinfectant
Description : What is disinfectant ?
Last Answer : Chemicals that destroy harmful germs when used on inert matter are called disinfectants. It is harmful to human body tissues. This is why it is used to disinfect inert matter. For example, fennel is used as disinfectant to disinfect sewers , floors , bathrooms, etc.
Last Answer : Autoclave On the machine 121 degrees At temperature Disinfectant To do Is.
Description : Are Spores harmed by disinfectant heat or cold?
Last Answer : Yes, potentially all 3 could harm spores.
Description : Why would bacteria not grow on an agar plate treated with a disinfectant?
Last Answer : What is the answer ?
Description : A dark purple compound used as an antiseptic and disinfectant is (a) Potassium nitrate (b) Sodium thiosulphate (c) Potassium permanganate (d) Calcium phosphate
Last Answer : Ans:(c)
Description : Penicillin is widely used as – (1) an antiseptic (2) a disinfectant (3) an antibiotic (4) an insecticide
Last Answer : (3) an antibiotic Explanation: Penicillin V is an antibiotic in the penicillin group of drugs. It fights bacteria in your body.
Description : KMnO4 can be used as a/an - (1) insecticide (2) fertiliser (3) pesticide (4) disinfectant
Last Answer : (4) disinfectant Explanation: Potassium permanganate is an inorganic chemical compound with the formula KMnO4. As an oxidant, potassium permanganate can act as an antiseptic. For example, dilute solutions ... infections of the hands or feet. It is used extensively in the water treatment industry.
Description : KMnO4 can be used as – (1) Insecticide (2) Fertilizer (3) Pesticide (4) Disinfectant
Last Answer : (4) Disinfectant Explanation: Potassium permanganate is an inorganic chemical compound with the formula KMnO4. As an oxidant, potassium permanganate can act as an antiseptic. For example, dilute ... of the hands or feet. Potassium permanganate is used extensively in the water treatment industry.
Description : Give an example of a chemical substance which can act both as an antiseptic and disinfectant.
Last Answer : Ans. Phenol.
Description : Peat moss is used as a packing material for sending flowers and live plants to distant places because (a) it serves as a disinfectant (b) it is easily available (c) it is hygroscopic (d) it reduces transpiration.
Last Answer : b) it is easily available