DELHI POLICE CONSTABLE GA/GK QUIZ

Question 1:

Which of the following subatomic particle does not show deflection when passing through an electric field?

Proton

Electron

Neutron

Anode rays

Question 2:

6 electrons are present in the outermost shell of the atom of an element ‘Z’.What will be the value of charge of the ion formed, if two electron are added to the outermost shell?

+1

+2

-1

-2

Question 3:

Which of the following separation technique is used to separate potassium chloride and ammonium chloride?

Evaporation

Sublimation

Filtration

Separating funnel

Question 4:

Which of the following is not a chemical change?

Rising of hot air over a radiator.

Burning of kerosene in a lantern.

Change in the colour of black tea on adding lemon juice to it.

Churning of milk cream to get butter

Question 5:

Animals of phylum platyhelminthes are also called

Bryophytes

flatworms

tapeworms

saprophytes

Question 6:

Which of the following disease targets liver?

Hepatitis

Pneumonia

Fungal disease

Cataract

Question 7:

Which of the following are airborne diseases?

I. Common cold

II. Tuberculosis

III. Pneumonia

I,II

II,III

I,III

I,II,III

Question 8:

Which of the following is used to distinguish between two sounds having same pitch and loudness?

Echo

Timbre

Amplitude

Frequency

Question 9:

The persistence of sound in a big hall due to repeated or multiple reflections of sound from the walls, ceiling and floor of the hall is called reverberation. Reverberation is reduced by-

carpeting the floor

covering the walls with absorbing material

upholstering furniture

all of these

Question 10:

A box is dropped from the top of 100 m high tower. Calculate its speed after 4 s.

40m/s

35m/s

40km/s

60m/s