Which of the following is the most stable element...?

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Which of the following is the most stable element...?

(A) Uranium

(B) Hydrogen

(C) Oxygen

(D) Lead

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Which natural element has the highest melting point...?

(A) Iron

(B) Tungsten

(C) Copper

(D) Silver

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Which of the following is a positively charged particle emitted by a radioactive element...?

(A) Beta Rays

(B) Alpha Rays

(C) Gamma Rays

(D) None of these

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All Transition Elements are _____...?

(A) Gases

(B) Metals

(C) Nonmetals

(D) Metalloids

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The element common to all acids is:__________...?

(A) Hydrogen

(B) Carbon

(C) Sulphur

(D) Oxygen

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Diamond is a very expensive ornament. It is composed of a single element ___________...?

(A) Carbon

(B) Gold

(C) Silver

(D) Platinum

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A (an) ______ is a pure substance which contains only one type of molecule made up of atoms of more than one element....?

(A) Compound

(B) Element

(C) Molecule

(D) Atom

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The number shown above the symbol of element is called...?

(A) Mass Number

(B) Valency

(C) Atomic Number

(D) Oxidation State

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Vertical columns in the periodic table of elements are called as__________...?

(A) Periods

(B) Groups

(C) Rows

(D) Lanthanoids series

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Fertilizers are substances containing chemical elements such as manure or mixture of ______...?

(A) Lipids

(B) Carbohydrates

(C) Nitrates

(D) Proteins

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If an element B has five protons and six neutrons what will be the symbol of element B _____...?

(A) 115B

(B) 11B

(C) 115B

(D) None

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The neutral atoms of all of the isotopes of the same element have _______...?

(A) Different numbers of protons

(B) Exact numbers of neutrons

(C) An exact number of protons

(D) An exact number of nucleons

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The essential elements for plant growth are...?

(A) Carbon (C), Oxygen (O), and Hydrogen (H)

(B) Phosphorus (P), Potassium (K), and Nitrogen (N)

(C) Helium (He), Neon (Ne), and Argon (Ar)

(D) Calcium (Ca), Magnesium (Mg), and Sulfur (S)

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What is the element required for solar energy conversion ______...?

(A) Ultra pure carbon

(B) Silicon

(C) Beryllium

(D) Tantalum

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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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The heaviest man made element found so for is__________...?

(A) Promethium

(B) Ununoctium

(C) Francium

(D) Technetium

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In periodic table elements are arranged according to ____...?

(A) Increasing atomic mass

(B) Decreasing atomic number

(C) Both A and B

(D) Increasing in atomic number

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The elements of VIIA group are known as ______...?

(A) Lanthanides

(B) Actinides

(C) Halogens

(D) Nobel Gases

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Organisms that eat all the dead and waste products and returning useful elements to soil and environment are known as...?

(A) Decomposers

(B) Producers

(C) Consumers

(D) None

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The three elements needed for healthy growth of plants are __________...?

(A) N, P, K

(B) N, C, P

(C) N, K,

(D) N, S, P

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Which is the most electro-negative element among the following _________...?

(A) Fluorine

(B) Bromine

(C) Sodium

(D) Oxygen

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Which of the following is a transition element...?

(A) Cl

(B) Cu

(C) S

(D) None of these

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Which one of the following is not a radioactive element ...?

(A) Cadmium

(B) Thorium

(C) Radium

(D) Uranium

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"A chemical compound always contains the same elements combined together in the same proportion or ratio" is the statement of ____...?

(A) Law of Multiple Proportions

(B) Law of Conservation of Mass

(C) Law of Reciprocal Proportions

(D) Law of Constant Composition

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The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg...?

(A) 4 days

(B) 12 days

(C) 16 days

(D) 8 days

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The maintenance of body temperature with in suitable limit is called...?

(A) Homeotherm

(B) Thermoregulation

(C) Osmoregulation

(D) Heterotherm

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The number shown below the symbol of element is called...?

(A) Mass Number

(B) Atomic Number

(C) Valance Number

(D) Atomic Mass

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The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect...?

(A) Nitrogen Dioxide (NO2)

(B) Chlorofluorocarbons (CFCs)

(C) Methane (CH4)

(D) High-fructose corn syrup (HFCs)

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Nuclear radiation is emitted by those elements whose:...?

(A) molecules are stable

(B) molecules are unstable

(C) nuclei are stable

(D) nuclei are unstable

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Which of the following is the most stable element...? Mcqs

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