The element required for solar energy conversion is 1 Beryllium 2 Silicon 3 Tantalum 4 Ultra pure carbon2 1685
Monazite is an ore of 1 Iron 2 Titanium 3 Thorium 4 Zirconium1 2035
Water is a compound because 1 It exists as a solid, a liquid or a gas 2 It contains hydrogen and oxygen 3 It contains two different elements joined by chemical bonds 4 It cannot be split up into simpler substances by chemical means1 6489
The element nickel is a 1 Magnetic metal 2 Radioactive metal 3 Non magnetic metal 4 Complex element1 1525
Potassium permanganate is used for purifying drinking water, because 1 It is dissolves the impurities of water 2 It is a sterilizing agent 3 It is an oxidizing agent 4 It is a reducing agent3 6523
Graphite and sillimanite are 1 Refractory minerals 2 Ferrous minerals 3 Base minerals 4 None of these1 5541
The presence of which of the following salts in water causes corrosion in steam boilers? 1 Sodium chloride 2 Magnesium chloride 3 Calcium bicarbonate 4 Potassium bicarbonate1 3024
When an iron nail gets rusted, iron oxide is formed 1 Without any change in the weight of the nail 2 With increase in the weight of the nail 3 With decrease in the weight of the nail 4 None of these1 5410
Water is a good solvent of ionic salts because 1 It has no colour 2 It has a high boiling point 3 It has a high dipole moment 4 It has a high specific heat1 2506
The hardest substance available on earth is 1 Platinum 2 Coal 3 Diamond 4 Gold13 32506
Actinides are the elements with atomic numbers from 1 36 to 43 2 89 to 103 3 97 to 114 4 101 to 1151 1816
Which of the following is the best conductor of electricity? 1 Zinc 2 Copper 3 Gold 4 Silver5 5174
The ratio of pure gold in 18 carat gold is 1 60% 2 75% 3 80% 4 100%3 11946
The highest grade of coal whose surface is shining and has the highest calorific value, is 1 Bituminous 2 Lignite 3 Anthracite 4 Peat1 6871
what is harmonic distortion?what is the use of it.in ce amplifiers
what are the role of chemical education in sustainable development
what is the purpose of using cyclhexane in synthesis?
Describe about equine fibroblast culture?
what is the mean of g= 9.8m/s2. waht is the mean of unit m/s2
HI, I AM SUNIL BISHNOI.I AM PREPARING FOR ISHRO ASTRONOTES EXAM.PLEASE TELL ME ALL ABOUT THIS.
Give MIC interpretive standards for streptomycin susceptibility ?
How to prepare SEM sample for bacteria?
what is Sphere cells suspension culture ?
Why can mould vary in colour?
How a cluster algorithm works?
In which of the glands are graffian follicles found??
What are the three major challenges facing microbiology today?
In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.
the basic approach to science was established by: