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51.

Modern model of the atom shows that electrons are the outside nucleus in a region of high _______(a) Probability(b) Velocity(c) Speed(d) Energy levelI had been asked this question by my school teacher while I was bunking the class.The above asked question is from Basic Chemical Concepts topic in section Chemistry of Milk of Dairy Engineering

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Correct choice is (a) PROBABILITY

Explanation: Modern model of the ATOM SHOWS that electrons are the OUTSIDE nucleus. They are present in the region of high probability.
Discussion
52.

C3H603 is the chemical formula for _____(a) Ascorbic Acid(b) LacticAcid(c) Tartaric Acid(d) LactoseThe question was asked at a job interview.My question is based upon Basic Chemical Concepts topic in division Chemistry of Milk of Dairy Engineering

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Discussion
53.

Atoms of the same element or of different elements combine into larger units which are called ______(a) Atom(b) Molecule(c) Ion(d) ElementThis question was addressed to me in homework.This interesting question is from Basic Chemical Concepts topic in chapter Chemistry of Milk of Dairy Engineering

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The CORRECT choice is (B) Molecule

The explanation: A molecule represents the SMALLEST fundamental UNIT of a CHEMICAL compound that can take part in a chemical reaction. A molecule is a group of atoms bonded together.
Discussion
54.

What are positively charged Ions in a solution called?(a) Cation(b) Anion(c) Atom(d) ElementThe question was asked during an interview for a job.Origin of the question is Basic Chemical Concepts topic in section Chemistry of Milk of Dairy Engineering

Answer» CORRECT answer is (a) Cation

To elaborate: Cation is a POSITIVELY CHARGED ion. It will be attracted to a cathode in ELECTROLYSIS.
Discussion
55.

The smallest part of an element that cannot exist as a free state is __________(a) Ion(b) Charge(c) Atom(d) MoleculeThis question was posed to me by my college director while I was bunking the class.Origin of the question is Basic Chemical Concepts topic in portion Chemistry of Milk of Dairy Engineering

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Right OPTION is (a) Ion

The EXPLANATION: Ion is the smallest part of an ELEMENT. It cannot exist as a free state. Ion can be an ATOM or molecule with a net electric charge DUE to the loss or gain of one or more electrons.
Discussion
56.

The charge on neutron is ______(a) Positive(b) Negative(c) Neutral(d) Both positive and NegativeThis question was posed to me in an interview for job.The question is from Basic Chemical Concepts topic in chapter Chemistry of Milk of Dairy Engineering

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The CORRECT choice is (C) NEUTRAL

The best I can explain: NEUTRON is neutral, having no charge on itself.
Discussion
57.

The charge on Electron is _______(a) Positive(b) Negative(c) Neutral(d) Both positive and NegativeI got this question during an interview.I want to ask this question from Basic Chemical Concepts topic in chapter Chemistry of Milk of Dairy Engineering

Answer» RIGHT answer is (b) Negative

Easy explanation: Electron is negatively CHARGED. An electron is a subatomic PARTICLE with a charge of negative electricity. It is found in all atoms and acting as the PRIMARY carrier of electricity in SOLIDS.
Discussion
58.

The charge on a proton is _____(a) Positive(b) Negative(c) Neutral(d) Both positive and NegativeI have been asked this question in an international level competition.This is a very interesting question from Basic Chemical Concepts topic in portion Chemistry of Milk of Dairy Engineering

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Right OPTION is (a) Positive

For explanation: Proton is a positively CHARGED ion. They have a mass of 1 ATOMIC unit. They are present in the nucleus of the ATOM.
Discussion
59.

What constitutes the nucleus of the atom?(a) Electron(b) Proton(c) Neutron(d) Proton and neutronI got this question in quiz.Query is from Basic Chemical Concepts topic in chapter Chemistry of Milk of Dairy Engineering

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Correct choice is (d) Proton and NEUTRON

The EXPLANATION: Proton and Neutron are PRESENT in the NUCLEUS of the atom. They are together known as nucleons.
Discussion
60.

Approximately how many elements are known to us?(a) 20(b) 30(c) More than 100(d) 50I got this question in homework.I need to ask this question from Basic Chemical Concepts in division Chemistry of Milk of Dairy Engineering

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Correct answer is (C) More than 100

The EXPLANATION: We know the existence of more than 100 elements. 115 elements have been DISCOVERED so far.
Discussion
61.

A Substance in which all the atoms are of the same kind is called ______(a) Blocks(b) Pyramid(c) Element(d) AtomI got this question during a job interview.My query is from Basic Chemical Concepts topic in portion Chemistry of Milk of Dairy Engineering

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The CORRECT CHOICE is (c) Element

The EXPLANATION is: Chemical substance interconvert able or broken down into SIMPLER substances and are primary constituents of matter is called element. They have atoms of the same kind.
Discussion
62.

_____ is the smallest building block of all matter in nature and cannot be divided chemically.(a) Element(b) Molecule(c) Cube(d) AtomThis question was addressed to me in final exam.The query is from Basic Chemical Concepts topic in chapter Chemistry of Milk of Dairy Engineering

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Right ANSWER is (d) ATOM

The BEST explanation: Atom is the smallest PARTICLE of a chemical element that can exist. They cannot be DIVIDED chemically.
Discussion