Which among the following would cause the bright red colur due to bursting of crackers?
The metal that is used as a catalyst in the hydrogenation of oils is ?
Consider the following statements:
If there were no phenomenon of capillarity
(1) It would be difficult to use a kerosene lamp.
(2) One would not be able to use a straw to consume a soft drink.
(3) The blotting paper would fail to function.
(4) The big trees that we see around would not have grown on the earth.
Which of the statements given above are correct?
The ionic mobility of alkali metal ions in aqueous solution is maximum for:
How many nodes are expected for the vibrational wavefunction with quantum number v = 4?
Which among the following is the main constituent of Biogas?
Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly?
Which one of the following is correct?
Consider the following statements regarding diamond:
(1) It is an allotrope of silicon.
(2) It is a bad conductor of heat and electricity.
(3) It is the hardest substance.
(4) It burns to produce carbon dioxide.
Which of the statements given above are correct?
Consider the following statements :
(1) An alloy is a mixture of two or more metals.
(2) An alloy is a mixture of a metal or metals with a non-metal.
Which of the statements given above is/are correct ?
Which of the following is correct?
In the hooch tragedy (casualty occurring due to the wine poisoning) sometimes the incidents of blindness occurs due to the poisonous substance:
Which one is an organic Acid ?
Consider the following statements: Hard water is not suitable for
(1) Drinking
(2) Washing clothes with soap
(3) Use in boilers
(4) Irrigating crops
Which of these statements are correct?
Until the nineteenth Century, aluminium was almost as expensive as gold. The invention of an inexpensive way to extract this metal by a 22-year-old American made this metal inexpensive subsequently. The inventor was:
The term anomers of glucose refers to:
The most malleable metal is :
A freshly prepared radioactive source of half life 2 hr emits radiation of intinsity which is 64 times the permissible safe level. The minimum time after possible to work safely with this source is when it would be:
A reaction was found to be second order with respect to the concentration of carbon monoxide. If the concentration of carbon monoxide is doubled, with everything else kept the same, the rate of reaction will:
The National Chemical Laboratory is situated in:
Consider the following: Crude oil is a direct source of
(1) Asphalt (2) Paraffin wax
(3) Fatty acids (4) Gas oil
Which of the above are correct?
Alloys made with mercury as one metal are called ?
Which acid is present in lemon ?
What is atomic number of an atom?
All of the following are amino acids except:
All of the following elements are liquids around room temperature except which one?
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3: