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Chemistry

Description: uses of alluminum bronze, alnico, magnelium, discovery of nitrogen, oxygen, uranium
Number of Questions: 25
Created by:
Tags: Chemistry Branches of Science Letter U Synonyms Trigonometry
Attempted 0/25 Correct 0 Score 0

Which of the following is a soft metal?

  1. Silver

  2. Chromium

  3. Aluminium

  4. Potassium


Correct Option: D

Barium was discovered by ______.

  1. Sir Humphry Davy in 1808

  2. Sir Humphry Davy in 1807

  3. Carl Wilhelm Scheele in 1808

  4. Henry Moissan in 1774


Correct Option: A

Nitrogen was discovered by _____.

  1. Joseph Priestly in 1774

  2. Jons Berzelius in 1832

  3. Daniel Rutherford in 1772

  4. Martin Klaproth in 1789


Correct Option: C

Boron was discovered by _______.

  1. Humphry Davy and J.L. Gay Lussac in 1808

  2. Humphry Davy and L.J. Thenard in 1808

  3. Humphry Davy, J.L. Gay Lussac and L.J. Thenard in 1808

  4. Sir Humphry Davy in 1808


Correct Option: C

Oxygen was discovered by _______.

  1. Sir Humphry Davy in 1807

  2. Joseph Priestly in 1774

  3. Andreas Marggrat in 1746

  4. Bernard Courtois in 1811


Correct Option: B

Uranium was discovered by _____.

  1. Martin Klaproth in 1789

  2. Andreas Marggrat in 1746

  3. Sir Humphry Davy in 1807

  4. Joseph Priestly in 1774


Correct Option: A

Some elements behave chemically both as metals and non-metals. Such metals are called ____.

  1. metalloids

  2. isotones

  3. isobars

  4. isotopes


Correct Option: A
Explanation:

Correct answer is (1). 

The most complex natural element is _________.

  1. uranium

  2. lead

  3. lithium

  4. thorium


Correct Option: A

Scuba divers use __________ in their gas cylinders.

  1. helium and oxygen

  2. oxygen and halogen

  3. helium and hydrogen

  4. oxygen and methane


Correct Option: A

What is rock cotton?

  1. Asbestos

  2. Sodium bicarbonate

  3. Litharge

  4. Pyrolusite


Correct Option: A
Explanation:

Correct answer is (1). 

Yellow cake is the mixture of ____________.

  1. nitrogen oxide

  2. zinc phosphide

  3. sulphur dioxide

  4. uranium oxide


Correct Option: D

Ore of thorium is ____.

  1. litharge

  2. pyrolusite

  3. cerussite

  4. monazite


Correct Option: D

Ore of lead is ______.

  1. gypsum

  2. pyrolusite

  3. magnesite

  4. cerussite


Correct Option: D

Aluminum Bronze is used to make _____.

  1. coins and statues

  2. magnets

  3. aircrafts

  4. engine parts


Correct Option: A

Alnico is used to make _____.

  1. aircrafts

  2. springs and tools

  3. magnets

  4. drills and crankshaft bearings


Correct Option: C

Talc is basic _________.

  1. magnesium silicate mineral

  2. malachite

  3. felspar

  4. invar


Correct Option: A

Which of the following is not an ore of iron?

  1. Limonite

  2. Siderite

  3. Magnetite

  4. Dolomite


Correct Option: D

Ore of uranium is _____.

  1. pitch blende

  2. monazite

  3. cerussite

  4. pyrolusite


Correct Option: A

Malachite is the mineral of

  1. lead

  2. copper

  3. zinc

  4. iron


Correct Option: B

The most plentiful mineral is _____.

  1. magnesium silicate mineral

  2. feldspar

  3. malachite

  4. alnico


Correct Option: B

Duralumin is used to make ______.

  1. coins and statues

  2. axle of motor cars

  3. aircrafts

  4. rock driller


Correct Option: C

Silumin is used to make ____.

  1. magnets

  2. engine parts

  3. aircrafts

  4. axle of motor cars


Correct Option: B

Magnalium is used to make ______.

  1. springs and tools

  2. engine parts

  3. external parts of troller and steamer

  4. coins


Correct Option: C

Nickel steel is used to make ______.

  1. drills and crankshaft bearings

  2. axle of motor cars

  3. springs and tools

  4. magnets


Correct Option: A

Chrome steel is used to make ____.

  1. springs tools

  2. aircrafts

  3. axle of motor cars

  4. engine parts


Correct Option: A
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