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Q:

Apart from proposing atomic theory, what did John Dalton researched on?

 

A) Plants B) Colour blindness
C) Penicillin D) Plastic
 
Answer & Explanation Answer: B) Colour blindness

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Filed Under: Chemistry
Exam Prep: Bank Exams

2 8851
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 8844
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 8841
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
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

7 8836
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

6 8835
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 8825
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 8824
Q:

The sampling distribution of a statistic is

 

 

A) A normal curve, for which probabilities are obtained by standardizing.  B) A distribution of all possible summary statistics from a single random sample, from the same population.
C) A distribution of all parameters from the population that is to be randomly sampled. D) The mechanism that determines whether the random sampling was effective. 
 
Answer & Explanation Answer: A) A normal curve, for which probabilities are obtained by standardizing. 

Explanation:

The sampling distribution of a statistic is the distribution of the statistic for all possible samples from the same population of a given size.

 

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Filed Under: Indian Economy
Exam Prep: Bank Exams

3 8815