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Earn 100

Which cell organelle is called the Master of the cell?

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Important Questions on Practice Set

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Find the value of the question mark (?) in the following.

2+5÷5+8÷1+13-1=?

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Select the INCORRECT match's from the following.

A. Copper-Cu           

B. Gold-Au

C. Mercury-Me         

D. Platinum-Pt

E. Silver-Ag

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A boat at anchor is rocked by waves whose consecutive crests are 100 m apart. The wave velocity of the moving crest is 25 m/s. What is the frequency of rocking of the boat?
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Which of the following is NOT a double displacement reaction ?
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An element with an atomic number of 17 is:
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x invested at 9% simple interest per annum for 5 years yields the same interest as that on y invested at 7.5% simple interest per annum for 4 years. Find x:y?
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Which of the following method will separate water from muddy water?
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Which of the following statement is/are true or false?

Statements:

A. On moving from left to right in a period, the chemical reactivity of the elements first decreases and then increases.

B. The chemical reactivity of non-metals increases on going down in a group of the periodic table.