Latest Science and Technology General Knowledge(GK) Questions and answers

1 .

What two things can you never eat for breakfast?

A)

Dinner

B)

Lunch

C)

Both (a) & (b)

D)

None of the above

Correct Answer : Option (C) - Both (a) & (b)

2 .

Which of the following is a healthy blood pressure level?

A)

120/80

B)

130/70

C)

135/75

D)

140/90

Correct Answer : Option (A) - 120/80

A normal reading would be any blood pressure below 120/80 mm Hg and above 90/60 mm Hg in an adult. If you're in the normal range, no medical intervention is needed.

However, you should maintain a healthy lifestyle and healthy weight to help prevent hypertension from developing.

3 .

Which one among the following stars is nearest to the earth?

A)

Sirius

B)

Spica

C)

Arcturus

D)

Proxima Centauri

Correct Answer : Option (D) - Proxima Centauri

The nearest stars to Earth are in the Alpha Centauri triple-star system, about 4.37 light-years away. One of these stars, Proxima Centauri, is slightly closer, at 4.24 light-years.

4 .

Brainstorming is an example of

A)

Lightening effect

B)

Problem solving technique

C)

Computer language

D)

None of the above

Correct Answer : Option (B) - Problem solving technique

"Brainstorming is the process of free thinking and generating ideas without being bound by restraints such as" is this a good or bad idea?" (Slater and Cory, 2003)." Brainstorming is one of the best-known techniques available for creative problem-solving.

5 .

Is cholesterol Hydrophobic or Hydrophilic?

A)

Hydrophilic

B)

Hydrophobic

C)

Both (a) & (b)

D)

None of the above

Correct Answer : Option (C) - Both (a) & (b)

Cholesterol is referred as an amphipathic molecule, that it contains its hydrophilic and hydrophobic parts.

6 .

Between a tiger and an monkey, which of the following is different?

A)

Class

B)

Phylum

C)

Order

D)

Kingdom

Correct Answer : Option (C) - Order

7 .

What is Oneirology, the study of?

A)

Dreams

B)

Gods

C)

Sleep

D)

Colour

Correct Answer : Option (A) - Dreams

Oneirology (/É’nÉªËˆrÉ’lÉ™dÊ’i/; from Greek á½„νειρον, oneiron, "dream"; and -λογÎ¯α, -logia, "the study of") is the scientific study of dreams.

8 .

Communication by touch is called

A)

Proxemics communication

B)

Semantics communication

C)

Chronemics communication

D)

Haptics communication

Correct Answer : Option (D) - Haptics communication

Communication by touch is called Haptics communication and the study of this is called as Haptics.

9 .

Cold foods should be kept at a temperature of

A)

< -18 deg Celcius

B)

< 5 deg Celcius

C)

> 18 deg Celcius

D)

> 41 deg Celcius

Correct Answer : Option (B) - < 5 deg Celcius

To reduce the risk of bacterial contamination, many foods must be stored in the refrigerator and thus kept below 5 degrees Celsius. These foods are often classified as ‘high-risk foods’ and include – meat, poultry, dairy, seafood, eggs, smallgoods and cooked rice and pasta. This also refers to ready-to-eat foods that have high-risk foods as ingredients and include – casseroles, quiche, pasta salad, pizza, sandwiches and many cakes.

By keeping these high-risk foods under 5 degrees Celsius it stops them from entering the ‘danger-zone’ – temperatures between 5 degrees Celsius and 60 degrees Celsius. The danger-zone is the temperature zone which provides bacteria with the perfect environment to rapidly grow and multiply to numbers that cause food poisoning.

10 .

What is the resolution of the human eye?

A)

576 MP

B)

488 MP

C)

360 MP

D)

285 MP

Correct Answer : Option (A) - 576 MP

According to scientist and photographer Dr. Roger Clark, the resolution of the human eye is 576 megapixels. That's huge when you compare it to the 12 megapixels of an iPhone 7's camera.