551. Phytochrome is Chromopeptide
552. Gobar gas is mixure of CH4CO and H2
553. Which chemical is used for preserving the biological specimens in the laboratories? Formaldehyde
554. Quarts is Calcium silicate
555. Which is the first man made element? TC
556. What is not correct about colloids? their stability is increased by adding an electrolyte
557. [...]
501. An aqueous solution of pH zero is none of the above
502. Economical method of separation of essential oils from nature sources is possible by fractional distillation
503. Dilantin sodium is an anti-inflammatory
504. One of the following is a heart drug Dizioxin
505. Nylon 66 is prepared from hexamethylene diamine and adipic acid
506. The formula of [...]
The main raw material used in match industry is Potassium chlorate
452. An antifreeze used in automobile radiators is Glycal
453. Which one of the following is a cation?
454. Radioactive isotope of hydrogen is 1H3
455. Monozite is the principal source of Thorium
456. Vinegar is acetic acid
457. Which of the following was the first organic [...]
401. Temporary hardness of water is due to bicarbonates of Ca & Mg
402. An element with atomic number 7 will contain 7 electrons & 7 protons
403. Paracetamol is analgesic
404. Chemical equilibrium is noted in the reaction reversible
405. Hypo, used in photography, is sodium thiosulphate
406. Which will explode on detonation in the dry Sodium
407. In fat, [...]
351. Basic principle of the hydrogen bomb is nuclear fusion
352. The charge on a proton is 16?109C
353. The two isotopes of chlorine are 17CI37and17CI37; both of them contain
all of these
354. The metal which is found in liquid state at room temperature is Mercury
355. The major constituent of Super-phosphate of lime is Phosphorous
356. Electrovalent bond is [...]
251. Which one of the following is a transition element? copper
252. The isotope 7N14 contains all of these
253. An atom of chlorine with atomic number 17 and mass number 35, contains in its nucleus 18 neutrons
254. Strach on hydrolysis gives Glucose
255. Which of the following helps the fermentation process? adding enzymes
256. Methylated spirit is [...]
201. Fat is a lipid
202. Calorific value is in the order of fats? carbohydrates ?proteins
203. Vulcanisation is the process of a adding sulphur
204. Which one of the following is not a radioactive substance? calcium
205. Optical isomers have both (A) and (B)
206. The element with the maximum number of isotopes in nature is hydrogen
207. How can [...]
101. Vinegar is 6-10% acetic acid
102. Gobar gas is a mixture of CH4, CO2&H2
103. Sand is SiO2
104. Rainwater helps to increase the ….of the soil nitrogen content
105. Which one of the following is not found in protein? S
106. Heavy water is the name given to D2O
107. Magnetron is used for the production of Cathode rays
108. [...]
52 Petroleum mainly contains aromatic hydrocarbons
53. Bhopal gas tragedy of 1984 was caused by one of the following compounds: Methyl isocyanate
54. pH of blood is 7.4
55. The blue colour of water in the sea is due to scattering of blue light by water molecules
56. The acid present in vinegar is CH3COOH
57. When a lead [...]
1. Zinc is not present in bronze
2. Dynamite was invented by Nobel
3. Periodic table was given by Mendeleev
4. Reduction is addition of Hydrogen.
5.Oxidation is addition of Oxygen.
5. The galvanized iron pipes are coated with zinc.
8. Non-stick kitchenwares are coated with Teflon.
9. Gobar gas mainly contains methane.
10. The chief constituent of vinegar is acetic acid.
11. The [...]