CAT Questions

Q:

Which of the following atoms has the largest radius?

A) Br B) K
C) Na D) Cl
 
Answer & Explanation Answer: B) K

Explanation:

For neutral atoms, the periodic trends in atomic size can be described like this

Atomic size decreases when going from left to right across a period,
Atomic size increases when going from top to bottom down a group.

 

Let's use these trends to try and figure out which atom would have the largest radius.

If you look at elements that are located in the same group, potassium will have a larger atomic radius when compared with sodium. Likewise, bromine will have a larger atomic radius when compared with chlorine.

Now focus on potassium and bromine. Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms.

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3 2693
Q:

What separates Europe from Asia?

A) Caspian mountains B) Ural mountains
C) Himalayan mountains D) Carpathian mountains
 
Answer & Explanation Answer: B) Ural mountains

Explanation:

what_separates_europe_from_asia1555495995.jpg image

Europe from Asia are separated by Ural mountains.

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Q:

Read the following information carefully and answer the questions given below it. There are five men A,B,C,D and E and six women P, Q, R, S, T and U. A, B and R are advocates, C, D, P, Q and S are doctors and the rest are teachers. Some teams are to be selected from amongst these eleven persons subject to the following conditions.

A, P and U have to be together.

B cannot go with D or R.

E and Q have to be together.

C and T have to be together.

D and P cannot go together.

C cannot go with Q.

If the team is to consist of two male advocates, two lady doctors and one teacher, the members of team are

 

A) A, P, R, S, U B) A, B, P, Q, U
C) B, E, Q, R, S D) A, B, P, U, S
 
Answer & Explanation Answer: D) A, B, P, U, S

Explanation:

From the given information; 

Members   Sex    Profession  

     A         M          Advocate
     Q         F           Doctor
     B         M          Advocate
     R         F           Advocate
     C         M          Doctor
     S         F           Doctor
     D         M          Doctor
     T         F           Teacher
     E         M          Teacher
     U         F           Teacher
     P         F           Doctor

 Answer (D)

 From option (D) A and B are two male advocates, P and S are two female doctors and u is female teacher.

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Q:

The MPC for an economy is

A) the slope of the savings schedule or line. B) 1 divided by the slope of the savings schedule or line.
C) the slope of the consumption schedule or line. D) 1 divided by the slope of the consumption schedule or line.
 
Answer & Explanation Answer: D) 1 divided by the slope of the consumption schedule or line.

Explanation:

Marginal propensity to consume (MPC) in economics is a metric that quantifies induced consumption, the concept that the increase in personal consumer spending (consumption) occurs with an increase in disposable income (income after taxes and transfers).

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Q:

Who is appointed as the UNICEF India’s Youth Ambassador?

A) P.V. Sindhu B) Hima Das
C) Mithali Raj D) Harmanpreet Kaur
 
Answer & Explanation Answer: B) Hima Das

Explanation:

Hima Das, nicknamed the "Dhing Express", is an Indian sprint runner from the state of Assam is appointed as the UNICEF India’s Youth Ambassador.

 

She holds the current Indian national record in 400 metres with a timing of 50.79 s that she clocked at the 2018 Asian Games in Jakarta, Indonesia

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Q:

Father of Email

Email1498884677.jpg image

A) A B) B
C) C D) D
 
Answer & Explanation Answer: B) B

Explanation:

Ray Tomilson

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Q:

The unit of energy in MKS system is

A) Joule B) Ohm
C) Erg D) Volt
 
Answer & Explanation Answer: A) Joule

Explanation:

The unit of energy in MKS system is Joule.

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Q:

Stoichiometry is based on

A) Law of conservation of energy B) Law of conservation of mass
C) Newton's 1st law D) Kepler's law
 
Answer & Explanation Answer: B) Law of conservation of mass

Explanation:

Stoichiometry is a branch of chemistry deals with the calculations on reactants and products. It is based on the Law of conservation of mass where total mass of reactants is equal to total mass of products.

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