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 Chemistry Questions

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Q:

Which of the following can be beaten and converted into thin sheets?

A) Zinc B) Phosphorus
C) Sulphur D) Oxygen
 
Answer & Explanation Answer: A) Zinc

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Exam Prep: Bank Exams

1 1903
Q:

In hydrolysis reactions compounds react with

A) carbon, causing decomposition B) glucose, causing decomposition
C) water, causing decomposition D) hydrogen, causing decomposition
 
Answer & Explanation Answer: C) water, causing decomposition

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0 1901
Q:

In Mendeleev's periodic table, the properties of the elements are considered a periodic function of their:

A) Atomic mass B) Ionization enthalpy
C) Atomic size D) Atomic number
 
Answer & Explanation Answer: A) Atomic mass

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Exam Prep: CAT , Bank Exams , AIEEE

0 1900
Q:

Which one of the following gases dissolves in water to give acidic solution?

A) Carbon dioxide B) Oxygen
C) Nitrogen D) Hydrogen
 
Answer & Explanation Answer: A) Carbon dioxide

Explanation:

Carbon dioxide (CO2) gas dissolved in water can cause water to become acidic.The acidity of water from dissolved CO2 can be reduced by a base such as baking soda (sodium bicarbonate).

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Filed Under: Chemistry
Exam Prep: Bank Exams

1 1899
Q:

______ is used for making chemical apparatus like beakers, flasks etc.

A) Potash glass B) Hard glass
C) Jena glass D) Soda glass
 
Answer & Explanation Answer: B) Hard glass

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0 1894
Q:

Which of the following is also used as a Bio fertilizer?

A) Urea B) Ammonia
C) Uric Acid D) Nitrates
 
Answer & Explanation Answer: B) Ammonia

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1 1890
Q:

A solution contains 33 g of common salt in 320 g of water. Calculate the concentration in terms of mass, by mass percentage of the solution.

A) 13.05% B) 9.09 g
C) 9.35g D)  9.35%
 
Answer & Explanation Answer: D)  9.35%

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Exam Prep: AIEEE , Bank Exams , CAT

1 1889
Q:

Which process usually requires water?

A) Physical weathering B) Mass wasting
C) Chemical weathering D) Erosion
 
Answer & Explanation Answer: C) Chemical weathering

Explanation:

Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts. These reactions occur particularly when the water is slightly acidic.

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4 1886