Sawaal

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Q:

Select the synonym of

 

to defile

 

A) to esteem B) to besmirch
C) to elevate D) to sanctify
 
Answer & Explanation Answer: B) to besmirch

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Filed Under: English
Exam Prep: Bank Exams

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Q:

Positive ions are formed from neutral atoms by loss of

A) neutrons B) protons
C) nuclear charge D) electrons
 
Answer & Explanation Answer: D) electrons

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Filed Under: Chemistry

21 8840
Q:

HTML is a subset of

 

A) SGMH B) SGMD
C) SGML D) None of the above
 
Answer & Explanation Answer: C) SGML

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Filed Under: Computer
Exam Prep: Bank Exams

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Q:

As the economy develops, the share of the tertiary sector in the GDP

A) Decrease B) Decrease than Increase
C) Increases D) Remain Constant
 
Answer & Explanation Answer: C) Increases

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Filed Under: Indian Economy

21 8837
Q:

Landstrom invented

A) Metallurgy B) Gas Engine
C) Safety Match D) None of these
 
Answer & Explanation Answer: C) Safety Match

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Filed Under: Inventions

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Q:

The most important cause for the outbreak of the Ghaddar revolution was the

A) Commencement of World War I B) Hanging of Kartar Singh Sarabha
C) Kamagato Maru Incident D) Arrest of Lala Hardayal
 
Answer & Explanation Answer: C) Kamagato Maru Incident

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Filed Under: Indian History

12 8821
Q:

In diseases like Polio, the cells that get destroyed by virus, are

A) Monocytes B) Erythrocytes
C) Motor neurons D) Sensory neurons
 
Answer & Explanation Answer: C) Motor neurons

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Filed Under: Biology

42 8818
Q:

A standing wave occurs when

A) a wave reflects upon itself B) the amplitude of a wave exceeds its wavelength
C) two waves overlap D) the speed of the wave is zero or near zero
 
Answer & Explanation Answer: A) a wave reflects upon itself

Explanation:

A standing wave also known as a stationary wave, is a wave in which its peaks or any other point on the wave do not move spatially.

This phenomenon can occur because the medium is moving in the opposite direction to the wave, or it can arise in a stationary medium as a result of interference between two waves traveling in opposite directions. The most common cause of standing waves is the phenomenon of resonance, in which standing waves occur inside a resonator due to interference between waves reflected back and forth at the resonator's resonant frequency.

 

Hence, standing wave occurs when a wave reflects upon itself.

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Filed Under: Physics
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