Give the common name for the following compound (CH\(_{3}\))\(_{2}\) CH CH\(_{2}\) -Br
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(A)
Isobutyl bromide
2
The enzyme that converts glucose to ethyl alcohol is?
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(B)
zymase
3
The scientist who stated that matter can be converted into energy is?
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(D)
Einstein
4
What is the IUPAC name for the following compound? HC\(\equiv\)CCH\(_{3}\)
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(B)
Methyl acetylene
5
What is the chemical name for the compound CuCO\(_{3}\)?
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(B)
Copper (ii) carbonate
6
A 'breath test' used by traffic police to check drunken driving uses?
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(D)
Potassium dichromatic-sulphuric acid
7
Which one of the following is not a mixture?
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(B)
Mercury
8
Which of the following is a non-metal that remains liquid at room temperature?
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(C)
Bromine
9
Which of the following are chemical changes?
I. cooking of food
II. digestion of food
III. freezing of water
IV. water is heated up
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(A)
I and II
10
The atomic weight of nitrogen is?
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(C)
14
11
The gas which causes global warming is?
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(B)
CO\(_{2}\)
12
Oxygen is absent in?
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(A)
Kerosene
13
A sample of any of the following substances disappears after some time when exposed to air like camphor, naphthalene, or dry ice. This phenomenon is called?
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(A)
Sublimation
14
The maximum electron in N shell is?
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(D)
32
15
Neutrons were discovered by?
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(A)
James Chadwick
16
Which of the following is a form of calcium carbonate?
I. limestone
II. marble
III. chalk
Iv. egg-shells
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(D)
I, II, III, and IV
17
Soaps clean surfaces on the principle based on?
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(D)
surface tension
18
The reactivity of fluorine is due to?
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(A)
its high electro negativity
19
The mass number of a nucleus is?
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(B)
The sum of the number of protons and neutrons present in the nucleus
20
The mass of one Avogadro number of helium atoms is?
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(B)
4.00gram
21
220g of carbon dioxide contains ----- moles
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(A)
5
22
The inherited traits of an organism are controlled by?
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(C)
DNA molecules
23
The most abundant rare gas in the atmosphere is?
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(C)
Ar
24
The heat required to raise the temperature of the body by 1k is called?
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(B)
Thermal capacity
25
The nucleus of a hydrogen atom consist of a?
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(A)
1 proton only
26
The metal used to recover copper from a solution of copper sulphate is?
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(D)
Fe
27
The nucleus of an atom consists of?
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(C)
Protons and neutrons
28
A solution contains 20g of solute in 180g of solvent. If the solvent is water, what is the concentration of the solution in terms of mass by mass percentage
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(C)
10%
29
The only metal that is anti-bacterial is?
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(D)
Copper
30
An element having the atomic number 17 will resemble which of the following elements having atomic number as given below?
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(B)
35
31
A chemical process in which there is a gain of electrons is known as?
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(B)
Reduction
32
The reactions involving simultaneous oxidation and reduction?
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(D)
Redox reactions
33
A binary compound of oxygen with another element is referred to as?
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(A)
Oxide
34
The process or act of extracting a metal from its ore and refining it is called?
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(C)
Mettallurgy
35
The compounds made up of only carbon and hydrogen are called?
