In what situation would an interviewer want to provide the interviewee a list of questions before the interview ?a. When the questions are technical and may require some research from the interviewee.
c. When the interviewer is looking for a spontaneous response from the interviewee.
b. When the interviewee is shy.
d. none of these

Answers

Answer 1
Answer:

Answer: Option (A) is the correct answer.

Explanation:

When the questions are technical and may require some research from the interviewee then an interviewer want to provide the interviewee a list of questions before the interview.

As only in this case, interviewer wants the interviewee to take some time in order to think about the particular question and then answer it appropriately.

As if there is no list of questions then there are changes that interviewee will forget about some useful point which is important to keep in mind before answering.

Answer 2
Answer:

Answer:

A

Explanation:


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Which of the following is not produced by nuclear decay?A) Alpha particles
B) Beta particles
C) Gamma rays
D) Delta particles

Answers

The answer is D. Delta particles.

Currently, there are three main types of nuclear decay: alpha decay, beta decay, and gamma decay. All three involve the emission of certain radioactive particles from the nuclear decay of an unstable atom. These particles are the alpha particles, beta particles, gamma rays, and conversion electrons. 

What is the main distinction between ionic and covalent bonding?

Answers

The main distinction between ionic and covalent bonding is that ionic bonding is the complete transfers of electrons between atoms whereas covalent bonding is the sharing of electrons between atoms.

Final answer:

The main difference between ionic and covalent bonding is the way electrons participate in the bonding. In ionic bonds, electrons are transferred and attract each other due to opposite charges. In contrast, covalent bonding involves sharing of electron pairs between atoms, usually resulting in stronger bonds.

Explanation:

The main distinction between ionic and covalent bonding is the way in which the electrons are involved. In an ionic bond, electrons transfer from one atom to another, resulting in a positive and a negative ion that attract each other due to opposite charges. The energy change associated with ionic bonding depends on three key processes; the ionization of an electron from one atom, the acceptance of the electron by the second atom, and the Coulomb attraction of the resulting ions.

On the other hand, the covalent bond involves sharing of electrons between two atoms. These electrons move back and forth between the atoms and do not permanently stay with one atom. Because of this shared electron pair, covalent bonds are stronger than ionic bonds.

Deciding whether a bond is ionic or covalent often involves considering the types of atoms involved and their relative positions on the periodic table. Bonds between two nonmetals are generally covalent, while bonding between a metal and a nonmetal is often ionic by nature.

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35 Which element reacts with oxygen to form ionic bonds?(1) calcium (3) chlorine(2) hydrogen (4) nitrogen

Answers

\boxed{\left( 1 \right){\text{ calcium}}} reacts with oxygen to form ionic bonds.

Further Explanation:

Covalent bonds are the types of bonds that involve the sharing of electrons between the bonded atoms. This bond is usually formed between two or more non-metals.

Ionic bonds are the chemical bonds that involve the transference of electrons from one atom to another. These bonds are generally formed between metals and non-metals. In these types of bonds, ions are formed by the atoms. Cations are formed by the loss of electrons and anions result from the gain of electrons.

Oxygen is a non-metal. In order to form an ionic bond with oxygen, the other element has to be a metal.

Hydrogen, chlorine, and nitrogen are non-metals so these can form covalent bonds with oxygen. But calcium is a metal and it forms ionic bonds with oxygen. Calcium loses two electrons to form {\text{C}}{{\text{a}}^(2 + )} and these electrons are gained by oxygen, resulting in the formation of {{\text{O}}^(2 - )}. The attraction between {\text{C}}{{\text{a}}^(2 + )} and {{\text{O}}^(2 - )} is an ionic bond and the resulting compound is CaO (For structure, refer to the attached image).

Learn more:

  1. Identification of ionic bonding: brainly.com/question/1603987
  2. What type of bond exists between phosphorus and chlorine? brainly.com/question/81715

Answer details:

Grade: High School

Chapter: Ionic and covalent compounds

Subject: Chemistry

Keywords: ionic bond, covalent bond, nitrogen, hydrogen, chlorine, calcium, oxygen, CaO, metal, non-metal.

Calcium is the element that reacts with oxygen to form an ionic bond. Calcium forms the ionic compound calcium oxide with oxygen. Hydrogen, chlorine, and nitrogen do not typically form ionic bonds with oxygen.

The element that reacts with oxygen to form ionic bonds is calcium.

Calcium (element #20 on the periodic table) readily reacts with oxygen to form calcium oxide, which is an ionic compound. In this reaction, calcium loses two electrons to become Ca2+, and oxygen gains two electrons to become O2-. This transfer of electrons creates an ionic bond, which is a type of chemical bond.

Hydrogen, chlorine, and nitrogen do not typically form ionic bonds with oxygen under normal conditions. Hydrogen forms covalent bonds with oxygen to create water, whereas chlorine and nitrogen mostly form covalent bonds.

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Ca(OH)2 is added to a large beaker of water. How is the solution different from the original water?A...The solution turns blue litmus to red.

B...The solution turns phenolphthalein pink.

C...The solution has more hydrogen ions.

D....The solution has fewer hydroxide ions.

Answers

When Ca(OH)₂ is added to a beaker of water the solution would turn phenolphthalein pink.  Phenolphthalein is a common indicator and is only pink when in basic solutions.  By adding calcium hydroxide, you are turning the solution into a basic solution since the concentration of OH⁻ ions is going up and therefore any phenolphthalein in solution would turn pink.
(answers A,C, and D would happen if you added an acid to the water such as HCl)
I hope this helps.  Let me know if anything is unclear.

Ca(OH)2 is added to a large beaker of water. The solution different from the original water are the solution turns blue litmus to red, will has more hydrogen, and has fewer hydroxide ions.

What is a solution?

A solution is a mixture of two or more solute into solvents. Solution is made by mixing of two or more molecules.

For example, is a solution of water and salt.

Thus, the correct option is A, C, and D.

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An object has a mass of 20 g and volume of 10 cm. Enter the numerical value for the density of the object in units of g/cmº

Answers

Answer:

density = 2g/cm³

Explanation:

density = mass/volume

mass = 20g

volume=10cm³

density=20g/10cm³

density = 2g/cm³

Final answer:

The density of the object is 2 g/cm³. This value expresses how much mass the object has per unit of volume, which in this case is cubic centimeters.

Explanation:

The density of an object is calculated by dividing its mass by its volume. In this case, the mass of the object is 20 g and its volume is 10 cm³. Therefore, the density of the object can be calculated as follows: density = mass/volume = 20 g/10 cm³ = 2 g/cm³.

This value implies that this object has 2 grams of mass per cubic centimeter of volume. This is a commonly used unit of density in physics for measuring small objects. A higher density usually indicates that an object is more compact or has more mass relative to its volume.

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The decayed organic material that gives soil its dark brown or black color is calledA) clay.
B) humus.
Eliminate
C) loam.
D) silt.

Answers

Option B. Humus. Its dark color is due to the high content of carbon.

Answer:

Answer is Humus

Explanation: