Chemistry- Questions and Answers 18
541. What is the commercial name of calcium nitrate?Norwegian saltpetre
542. Which are the important phosphatic fertilisers?
Calcium superphosphate, nitro phosphate & triple phosphate
543. Which kind of fertiliser is Thomas slag?
Phosphatic fertiliser
544. What is the name of the mixture of nitrogenous, phosphatic & potash fertilisers in suitable amounts?
NPK fertilisers
545. Which is the example of fertiliser available in the gaseous form?
Anhydrous ammonia
546. What are the examples of thermoplastics?
Polythene, nylon, celluloid & polystyrene
547. What are the examples of thermo¬setting plastics?
Bakelite, melamine, terylene & Glyptal
548. used to kill unwanted plants?
Herbicides
549. Which was the first widely used herbicide?
2,4-D (2, 4- Dichlorophenoxyacetic acid)
550. Which type of pesticides are atrazine & glyphosate?
Herbicides
551. The chemicals used to treat lice are known as-------
Pediculicides
552. Malathion & lindane are examples for which type of pesticides?
Pediculicides
553. The category of pest control chemicals intended to kill rodents are known as------
Rodenticides
554. Difethialone & Zinc phosphide are examples for which type of pesticides?
Rodenticides
555. Endosulfan is an example of------
Organochlorine insecticide
556. What is the fullform of DDT?
Dichloro diphenyl trichloroethane
557. In which year the Insecticides Act came into force in India?
1968
558. Which are the four colours used in the toxicity label of pesticides in India?
Red, Yellow, Blue & Green
559. What is the colour of the label of the extremely toxic pesticides?
Red
560. Which are the examples of red labelled pesticides?
Zinc phosphide & Monocrotophos
561. What is the colour of the label of the pesticides having high toxicity?
Yellow
562. Which are the examples of yellow labelled insecticides?
Endosulfan, carbaryl & quinalphos
563. What is the colour of the label of the pesticides having moderate toxicity?
Blue
564. Which are the examples of blue labelled pesticides?
Malathion, glyphosate & thiram
565. Which colour is used to label the slightly toxic pesticides?
Green
566. What are the examples of green labelled pesticides?
Mosquito repellant liquids & mancozeb
567. Which polymer is used to make combs, phonograph records, handles of various utensils & electric switches?
Bakelite
568. Which polymer is used to make unbreakable crockery?
Melamine - formaldehyde polymer
569. Which polymer is used in the manufacturing of paints & lacquers?
Glyptal
570. Which is the first fully synthetic fibre developed in 1931?
Nylon
571. Vegetable containing Sulphur:
Cabbage
572. In refrigerators, the liquid used as refrigerant is:
Liquid ammonia
573. The National chemical laboratory is situated in:
Pune
574. The substance that contains the maximum amount of nitrogen is:
Urea
575. The branch of chemistry dealing with the accurate determination of amounts of various substance is called:
Analytical chemistry
PSC Solved Question Papers ---> Click here
PSC TODAY's EXAM RESULTS ---> Click here
PSC EXAM PROGRAMME -> Click here
CURRENT AFFAIRS QUESTIONS -> Click here
PSC Degree Level Questions & Answers - Click here
PSC 10th, +2 Level Questions & Answers - Click here
PSC RANK LISTS / SHORTLISTS -> Click here
TEACHING APTITUDE TEST (K-TET, C-TET,, etc.) ---> Click here* SCERT KERALA TEXTBOOKS FOR CLASS II, IV, VI, VIII, IX, X, XII – FREE DOWNLOAD ---> Click here
* NCERT & CBSE TEXTBOOKS FOR ALL CLASSES – FREE DOWNLOAD ---> Click here
* SCERT TEXTBOOKS SOLUTIONS FOR ALL CLASSES ---> Click here
* NCERT & CBSE TEXTBOOKS SOLUTIONS FOR ALL CLASSES ---> Click here
0 Comments