Explanation

Thomas Savery is considered the inventor of the first commercially used steam-powered device.

In 1698, he patented a steam-powered pump designed to remove water from mines.

Explanation

The image formed at the retina of the human eye is real and inverted.

 Real and inverted is due to the presence of a convex lens in the eye.

Explanation

Reza Shah Pahlavi, original name Reza Khan

Born: October 26, 1919, Tehran, Iran

Died: July 27, 1980 (age 60 years), Cairo, Egypt

Iranian army officer who rose through army ranks to become shah of Iran.

Explanation

Explanation

• A dry chemical Fire extinguisher can be used on all types of fire
• ***
• An ABC or Multi-Purpose Dry Chemical portable fire extinguisher is useful for Class A, B, and C fires.
• These units can be used on wood, paper, cloth, trash, flammable liquids, and energized electrical equipment.
• ***

• extinguishers بجھانے والے

  Carbon dioxide is used in fire ‘extinguishers’

  
  

Explanation

Correct sentence:

"If he had come to me, I would have helped him."

This is intended to be a third conditional sentence

If + past perfect, would have + past participle

 The right choice ("had come") is not among the options.

Explanation

Shehroze Kashif has scaled Everest, K2, Kangchenjunga, Lhotse, Makalu, Manaslu and the Broad Peak, and the Nanga Parbat was his eighth summit of an 8-thousander.

Explanation

Let the number be x
According to the question,
91 - 

 = x
9100 - 30x = 100x
Or, 9100 = 130x
Or, x = 

Hence, x = 70

Explanation

Given, Loss =10 %=> CP 

CP−SP ×100=10

=> CPCP−180 ×100=10

=>CP−180=0.1CP

=>0.9CP=180

=>CP=200

To make a profit of 10 %, he must sell it at SP=CP+10 % of CP =200+20=Rs. 220

Explanation

The Battle of Buxar was fought on 22/23 October 1764, between the forces under the command of the British East India Company.