Questions

Q:

At what temperature do pathogenic bacteria grow best in food?

A) 5 to 15 degrees Celsius B) 15 to 25 degrees Celsius
C) 20 to 45 degrees Celsius D) 40 to 65 degrees Celsius
 
Answer & Explanation Answer: C) 20 to 45 degrees Celsius

Explanation:

The Bacteria that causes Food Borne illness are called Food Borne Pathogens. Most of the pathogens are mesophilic in nature, optimum temperature may be around 20-45 degree celsius. This range of temperatures is often called the "Danger Zone." Dry foods do not support the growth of bacteria.

 

In order to kill pathogenic bacteria you need temperatures above 74ºC. Temperature is the easiest factor to control in order to prevent bacterial growth.

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Q:

Cholesterol belongs to which class of molecules?

A) Lipids B) Carbohydrates
C) Nucleic acids D) Proteins
 
Answer & Explanation Answer: A) Lipids

Explanation:

Cholesterol belongs to lipids class of molecules. Lipids are sometimes called as fats which act as storing energy and structural components of cell membranes.

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Q:

Which of the following chemical compounds has the highest boiling point?

A) Dimethyl ether (CH3OCH3) B) Methanol (CH3OH)
C) Methane (CH4) D) None
 
Answer & Explanation Answer: B) Methanol (CH3OH)

Explanation:

Chemical Compounds with stronger intermolecular forces have higher boiling points.

 

The order of strengths of intermolecular forces is:

 London dispersion < dipole-dipole < H-bonding

 

Methane (CH4) — London dispersion forces

Dimethyl ether (CH3OCH3) — dipole-dipole attractions

Methanol (CH3OH) — hydrogen bonding

Therefore, Methanol - CH3OH with H-Bonding have highest Boiling Point among the given chemical compounds.

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Q:

Who has been appointed as the first woman Secretary General of the Lok Sabha?

A) Rama Devi B) Sumitra Mahajan
C) Anupama Kare D) Snehlata Shrivastava
 
Answer & Explanation Answer: D) Snehlata Shrivastava

Explanation:

Snehlata Shrivastava, appointed as the first woman Secretary General of the Lok Sabha. The appointment was made by Lok Sabha Speaker Sumitra Mahajan. Ms. Shrivastava will replace Anoop Mishra, who retired on November 30, 2017. 

Ms. Shrivastava, a senior civil servant with 35 years of rich and varied administrative experience is a 1982 batch IAS officer from the Madhya Pradesh cadre.

Rama Devi holds the distinction of the being the first woman secretary general of the Rajya Sabha.

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Q:

In 1933 congress repealed prohibition with the

A) 21st Amendment B) 20th Amendment
C) 19th Amendment D) 18th Amendment
 
Answer & Explanation Answer: A) 21st Amendment

Explanation:

In 1933, Congress repealed prohibition with the 21st amendment. At it’s heart, the scopes trial was a clash between religion and science. Nativists were opposed to immigration because they feared that immigration would be a damage to America’s traditions and that it would result in a loss of jobs.

The Prohibition Era in United States history lasted from 1919 to 1933. It was defined by a complete prohibition of the manufacturing, sale, and transportation of alcoholic beverages in the United States.

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Q:

The United Nations Conference on Trade and Development (UNCTAD) is located at which of the following places?

A) Geneva B) Rome
C) Paris D) Vienna
 
Answer & Explanation Answer: A) Geneva

Explanation:
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Q:

Genes contain instructions for assembling what?

A) Amino acids B) Proteins
C) Nucleotides D) All of the above
 
Answer & Explanation Answer: B) Proteins

Explanation:

Genes which are segment of DNA of a cell contains instructions for assembling proteins.

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Q:

Where does cellular respiration take place in the cell?

A) cytoplasm B) mitochodria
C) Ribosomes D) Chromosomes
 
Answer & Explanation Answer: B) mitochodria

Explanation:

Cellular repiration takes place in the mitochodria.

 

There are 3 phases of cellular respiration. They are:

1. Glycolysis (Fermentation),

2. Krebs Cycle, and

3. Electron Transport.

 

Glycolysis takes place in the cytoplasm. The Krebs cycle and electron transport takes place in the mitochondria.

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