The horizontal rows of the periodic table are called ______...? Mcqs

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The horizontal rows of the periodic table are called ______...?

(A) Groups
(B) Periods

(C) Sets
(D) Matrices

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Animals without backbone are called...?

(A) Vertebrates
(B) Invertebrates

(C) Both A and B
(D) None of these

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Drugs for treatment of rheumatoid arthritis can be obtained from ______...?

(A) Animals
(B) Minerals

(C) Plants
(D) Micro organisms

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An alloy is the homogeneous mixture of ______...?

(A) Two solid
(B) Two liquid

(C) Two gases
(D) Solid and liquid

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Animals with backbone are called...?

(A) Vertebrates
(B) Invertebrates

(C) Both A and B
(D) None

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What are the directions of a magnetic bar...?

(A) North, South, East, West
(B) Up, Down, Left, Right

(C) Positive, Negative, Neutral
(D) North, South

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As a result of which treaty, ozone hole in Antarctica is slowly healing...?

(A) Koyoto protocol
(B) Ottawa treaty

(C) Montreal protocol
(D) Oslo Accord

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Which of the following is not an example of concave mirror...?

(A) Cosmetic mirror
(B) Dentist mirror

(C) Security mirror
(D) Car headlight mirror

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Problem solving approach of biology and other sciences called...?

(A) Logical Method
(B) Analytical Method

(C) Scientific Method
(D) Experimental Method

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Approximate age of milky-way is ________...?

(A) 16.5 billion years
(B) 15.5 billion years

(C) 13.5 billion years
(D) 14.5 billion years

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