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Q:

Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic table?

A) Scandium B) Gallium
C) Titanium D) Germanium
 
Answer & Explanation Answer: B) Gallium

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Q:

Which of the following metals is found in free state?

A) Sodium B) Gold
C) Potassium D) Calcium
 
Answer & Explanation Answer: B) Gold

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Q:

Which of the following is a CORRECT statement?

A) Only compounds are pure substance B) Compounds are impure substance
C) Only elements are pure substance D) Both compounds and elements are pure substance
 
Answer & Explanation Answer: D) Both compounds and elements are pure substance

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Q:

15% of an alloy was silver. If in a quantity of alloy there was 51 g of silver, what was the quantity of the other elements in the alloy?

A) 204 g B) 340 g
C) 300 g D) 289 g
 
Answer & Explanation Answer: D) 289 g

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Q:

In the Modern Periodic Table elements present in the same period will have the same

A) atomic weight B) number of shells
C) atomic number D) valence electrons
 
Answer & Explanation Answer: B) number of shells

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Q:

In the modern periodic table, which of the two periods contain 8 elements each?

A) 4 and 5 B) 3 and 4
C) 1 and 2 D) 2 and 3
 
Answer & Explanation Answer: D) 2 and 3

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Q:

What is the full form of PVC?

A) Phosphonil vinyl Carbonate B) Polyvinyl S Carbonate
C) Polyvinyl Carbonate D) Polyvinyl Chloride
 
Answer & Explanation Answer: D) Polyvinyl Chloride

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Q:

Which of the following is NOT a property of acids?

A) Acids form salts with bases B) Acids have bitter taste
C) Acids have sour taste D) Acids turn blue litmus red
 
Answer & Explanation Answer: B) Acids have bitter taste

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