Which of the following has the maximum density...? Mcqs

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Which of the following has the maximum density...?

(A) Water
(B) Ice

(C) Benzene
(D) Chloroform

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Milk has pH:e:...?

(A) 6.5
(B) 7.5

(C) 8.5
(D) 9.5

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اوزون لیئر کو سب سے ذیادہ نقصان کون سا مادہ کرتا ہے۔۔۔؟

(A) سلفر
(B) زنگ

(C) ہائیڈروجن
(D) کاربن

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A matter can exist in which of the following forms:...?

(A) Liquid
(B) Solid

(C) Gas
(D) All of these

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Exoskeleton of a marine snail is composed of...?

(A) Calcium Sulphate
(B) Calcium Carbonate

(C) Sulphur Dioxide
(D) None of these

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Cooking gas is mixture of which of the following two gases...?

(A) Methane & Carbon dioxide
(B) Oxygen & Nitrogen

(C) Butane & Propane
(D) Oxygen & Methane

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Which of the following is not a chemical reaction...?

(A) Burning of a paper
(B) Conversion of Water into stream

(C) Digestion of food
(D) Burning of coal

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What is the first element in the periodic table?...?

(A) Hydrogen
(B) Helium

(C) Nitrogen
(D) Carbon

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Nitrogen boils at a temperature of:...?

(A) -96 °C
(B) -196 °C

(C) -296 °C
(D) -310 °C

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The freezing point of water on a centigrade scale is...?

(A) 0°C
(B) 1°C

(C) -1°C
(D) 5°C

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