What is the colour of phenolphthalein indicator in basic medium...? Mcqs

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What is the colour of phenolphthalein indicator in basic medium...?

(A) Red
(B) Yellow

(C) Pink
(D) Blue

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Which one of the following is not a way to reduce friction...?

(A) Smooth and polishing surfaces
(B) Less contact area

(C) Oil and lubricants
(D) Ball bearing and rollers

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Total mass of the reactants and products will remain conserved during a chemical reaction, this statement is called _____...?

(A) Law of definite proportions
(B) Law of conservation of mass

(C) Law of multiple proportions
(D) Law of reciprocal proportions

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Light dependent reaction takes place in ______...?

(A) Stroma
(B) Thylakoid

(C) Cristae
(D) Cisternae

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Solution of biological problem starts with ______...?

(A) Hypothesis
(B) Experimentation

(C) Conclusion
(D) Observation

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The Quantity of matter present in an object is its ________...?

(A) Density
(B) Weight

(C) Mass
(D) None of these

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In an oil lamp, the oil rises up in the wick due to...?

(A) Capillary action
(B) Atmospheric pressure

(C) Viscosity of oil
(D) Change in temperature

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Which month of calendar year can lack a new moon...?

(A) December
(B) February

(C) May
(D) None

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Which of the following are the ingredients of gun metal...?

(A) Iron, Zinc and Titanium
(B) Iron and Tin

(C) Iron, Brass and Tin
(D) Copper, Tin and Zinc

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A piece of matter in pure form is termed as ______...?

(A) Redical
(B) Mixture

(C) Compound
(D) Substance

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