All Analytical and Logical Reasoning MCQs

Question 1

Why is the ozone layer so important for our survival?

Accepted Answer

The ozone layer absorbs harmful ultraviolet radiation from the sun.

Answer

It provides air resistance to objects entering Earth, causing them to burn up.

Answer

Ozone traps harmful chemicals like chlorine to prevent tissue damage.

Answer

Ozone breaks down into oxygen which is essential for breathing.

Question 2

Erythrocytes are the functional component of blood responsible for the transportation of gasses and nutrients throughout the human body. Their unique shape and composition allow for these specialized cells to carry out their essential functions. Erythrocytes would swell and burst if placed in conditions:

Accepted Answer

0.15% NACL solution

Answer

Temperature of 310 K

Answer

15% NACL solution

Answer

15% Hydrochloric acid

Question 3

How many chain isomers can an aliphatic saturated hydrocarbon with 7 carbons make?

Accepted Answer

9

Answer

7

Answer

5

Answer

12

Question 4

Based on table 1, of the following 4 metals, which has the greatest ability to carry electric current?

Accepted Answer

Beryllium

Answer

Iron

Answer

Magnesium

Answer

Tungsten

Question 5

A pyrethroid is an organic compound similar to the natural pyrethrins, which are produced by the flowers of pyrethrums.Pyrethroids are used as commercial and household insecticides.Pyrethroid is an organic compound produced by the flowers of pyrethrums. Scientists found that even in a bee populated area, the bees were not found near the pyrethrums. After further research they concluded that pyrethroid is a defensive chemical produced by these plants to keep bees away from the flowers by affecting the neurochemical pathway of the bees. Scientists further researched and developed a synthetic pyrethroid and was introduced as an insecticide on a commercial scale to farmers in the early 1900s. Initially it was very successful in keeping insects away. However, after a while the farmers started feeling severe mood swings and nausea on a daily basis. Later, scientists further studied the insecticide and deduced that the insecticide in large quantities also affected the neurochemical pathways of the farmers and reduced the synthesis of a neurotransmitter in the brain. Which neurotransmitter did the Pyrethroid affect in the farmers who used the insecticide in a large quantity

Accepted Answer

Serotonin

Answer

Acetylcholine

Answer

Calcitonin

Answer

GABA

Question 6

Ethanol and Propane are both colorless organic substances of a similar molar mass with 2 and 3 carbon atoms respectively. However, despite having a longer carbon chain, propane is a gas and ethanol, having less carbon atoms is a liquid at room temperature. What is the reason behind the differences observed

Accepted Answer

Hydrogen bonding between molecules of ethanol

Answer

Ionic bonding in ethanol

Answer

Greater dispersion forces in ethanol

Answer

Dipole forces between the O and H in the ethanol molecule

Question 7

In human blood, calcium (Ca2+) concentration is regulated by vitamin D3. First vitamin D3 is converted to calcidiol (CD) in the liver. An elevated concentration of CD inhibits furhter conversion of vitamin D3. Next, CD is conceverted to calcitriol (CT) in the kidneys in a reaction tht requires parathyroid hormone (PTH). An elevated concentration of CT increases Ca2+ concentration, which in turn inhibits further release of PTH. See figure 1According to Figure 3, the relative blood CT concentration is between 5 times normal and 6 times normal within which of the following blood Ca2+ concentration ranges?

Accepted Answer

8mg/100 mL to 9mg/100 mL

Answer

13mg/100 mL to 14mg/100 mL

Answer

10mg/100 mL to 11mg/100 mL

Answer

11mg/100 mL to 12mg/100 mL

Question 8

Procaine is a medication used for analgesia before a procedural intervention. It is a pharmaceutical medication belonging to the aminoester group of local anesthetics and it is commonly found as Nitrobenzoic acids, a derivative of benzoic acid. German chemist Alfred Einhorn first synthesized the drug as a safer anesthetic alternative to cocaine due to its side effect profile, patenting procaine under the trade name "Novocain". Historically, procaine has been used for local, regional, and neuraxial anesthesia via local infiltration, peripheral nerve blockade, and intrathecal injection. Nitrobenzoic acid can also have other isomers which have completely different uses and cannot be used as an alternative to Novacin. How many position isomers can Nitrobenzoic acid possibly form?

Accepted Answer

3

Answer

4

Answer

5

Answer

6

Question 9

A solute is any substance that is dissolved in another substance, which is called the solvent. A student tested the solubility (a measure of how much solute will dissolve into the solvent) of six different substances. The solubility of a substance at a given temperature is defined as the concentration of the dissolved solute that is in equilibrium with the solvent. Table 1 represents the concentration of dissolved substances in 100 grams of water at various temperatures. The concentrations are expressed in grams of solute per 100 grams of water.The data shown in table 1 support the conclusion that, for a given substance as the temperature of the water increases, the amount of solute that can be dissolved

Accepted Answer

Varies but with a trend depending on substance

Answer

Increases only

Answer

Decreases only

Answer

Varies but with no trend

Question 10

The atmosphere is made up of 4 distinct layers: the troposphere, stratosphere, mesosphere, and thermosphere. Different types of clouds form in the different layers depending on the pressure in the atmosphere and the ambient temperature. The cloud types include nimbus, stratus, cumulus, and cirrus. Figure 1 shows the location of the barriers of the atmosphere when the temperature and pressure are at an ideal condition for cloud formation. It also shows the different types of clouds formed at the different levels. Note: Clouds are formed mostly of water crystals, but can also contain particles of rock and dust.According to figure 1, the atmospheric layer with the greatest range in pressure is the

Accepted Answer

Thermosphere

Answer

Mesosphere

Answer

Stratosphere

Answer

Troposphere

Question 11

The atmosphere is made up of 4 distinct layers: the troposphere, stratosphere, mesosphere, and thermosphere. Different types of clouds form in the different layers depending on the pressure in the atmosphere and the ambient temperature. The cloud types include nimbus, stratus, cumulus, and cirrus. Figure 1 shows the location of the barriers of the atmosphere when the temperature and pressure are at an ideal condition for cloud formation. It also shows the different types of clouds formed at the different levels. Note: Clouds are formed mostly of water crystals, but can also contain particles of rock and dust.Which of the following statements about the formation of cumulus clouds is supported by data presented in figure 1Cumulus clouds form typically in

Accepted Answer

Pressures between 8 and 12 psi and at an average temperature of 35 degree c

Answer

Pressures between 12 and 16 psi and at an average temperature of 22 degree c

Answer

Pressure of 4 psi and at average temperatures between 12 and 22 degree c

Answer

Pressure of 18 psi and at average temperatures between 50 and 60 degree c

Question 12

The atmosphere is made up of 4 distinct layers: the troposphere, stratosphere, mesosphere, and thermosphere. Different types of clouds form in the different layers depending on the pressure in the atmosphere and the ambient temperature. The cloud types include nimbus, stratus, cumulus, and cirrus. Figure 1 shows the location of the barriers of the atmosphere when the temperature and pressure are at an ideal condition for cloud formation. It also shows the different types of clouds formed at the different levels. Note: Clouds are formed mostly of water crystals, but can also contain particles of rock and dust.According to fig 1 as pressure within the atmosphere layers increases, temperature within the atmospheric layers

Accepted Answer

Decreases only

Answer

Increases only

Answer

Increases up to 6 psi, then decreases

Answer

Decreases up to 10 psi then increases

Question 13

The atmosphere is made up of 4 distinct layers: the troposphere, stratosphere, mesosphere, and thermosphere. Different types of clouds form in the different layers depending on the pressure in the atmosphere and the ambient temperature. The cloud types include nimbus, stratus, cumulus, and cirrus. Figure 1 shows the location of the barriers of the atmosphere when the temperature and pressure are at an ideal condition for cloud formation. It also shows the different types of clouds formed at the different levels. Note: Clouds are formed mostly of water crystals, but can also contain particles of rock and dust.According to the information given in figure 1, clouds within the stratosphere are most likely formed

Accepted Answer

Under a pressure of 10 psi and 30 degree C

Answer

Under a pressure of 4 psi and 20 degree C

Answer

Over a pressure of 14 psi and 50 degree C

Answer

Over a pressure of 12 psi and 40 degree C

Question 14

The atmosphere is made up of 4 distinct layers: the troposphere, stratosphere, mesosphere, and thermosphere. Different types of clouds form in the different layers depending on the pressure in the atmosphere and the ambient temperature. The cloud types include nimbus, stratus, cumulus, and cirrus. Figure 1 shows the location of the barriers of the atmosphere when the temperature and pressure are at an ideal condition for cloud formation. It also shows the different types of clouds formed at the different levels. (Note: Clouds are formed mostly of water crystals, but can also contain particles of rock and dust.)If a pressure of 7 psi were sustained within the atmosphere, according to the image, which of the following types of clouds would likely form?

Accepted Answer

Stratus

Answer

Cirrus

Answer

Cumulus

Answer

Nimbus

Question 15

What is the correct order of the capacitances of these circuits, from lowest to highest? Assume all capacitances have the same capacitance.

Accepted Answer

C<B<A<D

Answer

B<A<C<D

Answer

D<C<B<A

Answer

D<C<A<B

Question 16

Dinitrophenol is a metabolic poison that prevents the production of ATP. What will happen when a resting axon is treated with such a poison?

Accepted Answer

The charge outside the axon membrane becomes less positive

Answer

The charge inside the axon membrane becomes more negative

Answer

The charge inside the axon membrane becomes less positive

Answer

The charge outside the axon membrane does not change

Question 17

A certain electron travels within a conductor. The path of electron for a short time interval is shown below. Which of these best represents the path the electron would have travelled if it was experiencing an additional constant force towards left? The dotted line shows the path.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 18

Alcohols are carbon compounds containing a hydroxyl (OH) group. Alkenes are carbon compounds containing at least 1 carbon-carbon double bond (C=C).Dehydration (removal of H2O) of Alcohol W in the presence of phosphoric acid (H3PO4) produces H2O and a mixture of 4 alkenes (Alkenes 1-4) that each contain only 1 C=C bond:Dehydration of each of 3 other alcohols (Alcohols X, Y, and Z) produces H2O and 2 or more of Alkenes 1-4. Stu- dents studied the dehydration of each of these 4 alcohols, which are all liquids at 25°C.What was the most likely purpose of the sand bath shown in Figure 1 ?

Accepted Answer

To evenly distribute heat to the flask

Answer

To partially cool the test tube

Answer

To provide sand as a reactant in the dehydration reaction

Answer

To provide sand as a surface onto which the vapours would condense

Question 19

Alcohols are carbon compounds containing a hydroxyl (OH) group. Alkenes are carbon compounds containing at least 1 carbon-carbon double bond (C=C).Dehydration (removal of H₂O) of Alcohol W in the presence of phosphoric acid (H₃PO₄) produces H₂O and a mixture of 4 alkenes (Alkenes 1-4) that each contain only 1 C=C bond:Dehydration of each of 3 other alcohols (Alcohols X, Y, and Z) produces H₂O and 2 or more of Alkenes 1-4. Students studied the dehydration of each of these 4 alcohols, which are all liquids at 25°C.Which of the following statements gives the most likely reason that the test tube was cooled in ice water, as shown in Figure 1? The test tube was most likely cooled in ice water to more readily:

Accepted Answer

Condense the vapour produce

Answer

Condense the liquid produced

Answer

Evaporate the liquid produced

Answer

Evaporate the vapour produced

Question 20

A bar magnet and a solenoid are kept beside each other. In which of the following cases current will not be produced?

Accepted Answer

When both the magnet and solenoid are moving in the same direction with the same speed

Answer

When the magnet is moving towards the solenoid

Answer

When the solenoid is moving towards the magnet

Answer

When both magnet and solenoid are moving in opposite directions with the same speed

All Free Analytical and Logical Reasoning MCQs with Answers