Which of the following statements is incorrect?

Metals generally have low melting and boiling point

Metals usually combine with oxygen to form basic oxides

Metals generally have low melting and boiling point

Metals are good conductors of heat and electricity

Non - metals are generally non - malleable and non sonorous

A GK IQ Test For Indian High School Students.

1.

Magnet loses its magnetic properties when:
- A.
  
  Dipped in water
- B.
  
  Dipped in oil
- C.
  
  Brought near a piece of Iron
- D.
  
  Strongly heated
Correct Answer
D. Strongly heated

Explanation
When a magnet is strongly heated, the heat causes the alignment of the magnetic domains within the magnet to become disordered. This disrupts the magnetic field and weakens or eliminates the magnet's magnetic properties.

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2.

In the diagram O, is the centre of a circle.AE + EB = CE + ED. OP ^ AB and OQ ^ CD then true relation between OP and OQ is -
- A.
  
  OP > OQ
- B.
  
  OP < OQ
- C.
- D.
  
  OP = OQ
Correct Answer
D. OP = OQ

Explanation
Since OP is parallel to AB and OQ is parallel to CD, we can conclude that OP and OQ are equal in length. This is because, in a circle, any line passing through the center and perpendicular to a chord bisects the chord. Therefore, OP = OQ.

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3.

Tissue that helps in conduction of food is:
- A.
  
  Xylem
- B.
  
  Phloem
- C.
  
  Collenchyma
- D.
  
  Chlorenchyma
Correct Answer
B. Phloem

Explanation
Phloem is the tissue responsible for the conduction of food in plants. It transports sugars, amino acids, and other organic molecules from the leaves (where they are produced) to other parts of the plant, such as the roots, stems, and fruits. Phloem consists of sieve tubes, companion cells, fibers, and parenchyma cells, all working together to facilitate the movement of nutrients throughout the plant. Xylem, on the other hand, is responsible for the conduction of water and minerals. Collenchyma and chlorenchyma are types of plant tissues that have different functions, but they are not involved in the conduction of food.

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4.

Direction: A square transparent sheet with a pattern is given in figure X. Find out from amongst the alternatives as to how the pattern would appear when the transparent sheet is folded at the dotted line.
- A.
- B.
- C.
- D.
Correct Answer
A.
5.

Who started the publication of 'Commonweal' magazine?
- A.
  
  Bal Gangadhar Tilak
- B.
  
  Mohandas Karamchand Gandhi
- C.
  
  Jawahar Lal Nehru
- D.
  
  Annie Besant
Correct Answer
D. Annie Besant

Explanation
Annie Besant started the publication of 'Commonweal' magazine.

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6.

Which of the following statements is incorrect?
- A.
  
  Metals usually combine with oxygen to form basic oxides
- B.
  
  Metals generally have low melting and boiling point
- C.
  
  Metals are good conductors of heat and electricity
- D.
  
  Non - metals are generally non - malleable and non sonorous
Correct Answer
B. Metals generally have low melting and boiling point

Explanation
Metals generally have high melting and boiling points. This is because the metallic bond between metal atoms is strong, requiring a large amount of energy to break the bonds and change the state of the metal from solid to liquid or gas.

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A GK IQ Test For Indian High School Students.

Magnet loses its magnetic properties when:

In the diagram O, is the centre of a circle.AE + EB = CE + ED. OP ^ AB and OQ ^ CD then true relation between OP and OQ is -

Tissue that helps in conduction of food is:

Direction: A square transparent sheet with a pattern is given in figure X. Find out from amongst the alternatives as to how the pattern would appear when the transparent sheet is folded at the dotted line.

Who started the publication of 'Commonweal' magazine?

Which of the following statements is incorrect?