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

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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

(A) Hydrogen
(B) Carbon

(C) Sulphur
(D) Oxygen

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Source: This question is taken from the Everyday Science

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

(A) Iron
(B) Tungsten

(C) Copper
(D) Silver

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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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The atoms of same element which have the same atomic number but different mass numbers are known as...?

(A) Isotopes
(B) Isoelectronic

(C) Isomers
(D) Isobars

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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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All Transition Elements are _____...?

(A) Gases
(B) Metals

(C) Nonmetals
(D) Metalloids

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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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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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Source: This question is taken from the Everyday Science

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