1. Which of the following can undergo sublimation ?

Ammonium chloride

Ammonium chlorate

Ammonium sulphate

Ammonium phosphate

Answer: Ammonium chloride

Explanation:

Ammonium chloride. Ammonium chloride can undergo sublimation, when it is heated, the substance undergoes changes from solid to gas


2. An object of mass 13 kg is moving with a uniform velocity of 5 ms-1. What is the kinetic energy possessed by the object ?

187.5 J

17.5 J

162.5 J

162.5 ms

Answer: 162.5 J

Explanation:

Mass of object = 13 Kg Speed of object = 5 m/s Now from the above explanation, we can see that, ? Kinetic energy possessed by the object = 1/2 × 13 × (5) ? 1/2 × 13 × 25 = 162.5 J


3. The property of metals wherein they can be beaten into thin sheets is called ?

expansion

malleability

ductility

conduction

Answer: malleability

Explanation:

Malleability - Ability of metals to be beaten into thin sheets


4. The oesophagus and lining of the mouth are also covered with ......... ?

Squamous epithelium

Ciliated epithelium

Columnar epithelium

Glandular epithelium

Answer: Squamous epithelium

Explanation:

The oesophagus and lining of the mouth are also covered with Squamous epithelium


5. The millions period consists of the places ?

M, TH, HM

O,T,M

M,TM

TTh, HTh, M

Answer: M, TH, HM

Explanation:

Million Period consists of places: Million, Hundred Millions, Thousand Millions. The ones period consists of the digits in the hundreds, tens, and ones places


6. The pH of pure water is ?

2

6

7

8

Answer: 7

Explanation:

Pure water has a pH of 7 and is considered “neutral” because it has neither acidic nor basic qualities


7. Which of the following is not a Connective Tissue ?

Cartilage tissue

Muscular Tissue

Adipose Tissue

Ligament

Answer: Muscular Tissue

Explanation:

Muscular tissue is a specialized tissue in animals which applies forces to different parts of the body by contraction. It is made up of thin and elongated cells called muscle fibers. It controls the movement of an organism


8. The walls of sclerenchyma cells are thickened due to ____ ?

Pectin

Hemi-cellulose

Cellulose

Lignin

Answer: Lignin

Explanation:

Sclerenchyma tissue possesses long, narrow cells with thickened walls. They possess secondary walls made of lignin. Lignin is a chemical substance, which acts as cement and hardens them


9. What is the ability of a metal to be drawn into thin wires called ?

Ductility

Sonorous

Malleability

Intractability

Answer: Ductility

Explanation:

Ductility- Ability of metals to be drawn into thin wires. Sonorous- Ability of metals to produce sound when beaten hard on its surface. Malleability- Ability of metals to be beaten into thin sheets.


10. The organs that have different basic structure (or different basic design) but have similar appearance and perform 5 similar functions are called ?

biogenetic law

analogous organs

homologous organs

fossils

Answer: analogous organs

Explanation:

The organs that have different basic structures (or different basic designs) but have a similar appearance and perform similar functions are called analogous organs Analogous organs have similar functions but different origins. These are developed in widely different organisms phylogenetically due to similar habitats and modes of life, e.g., wings of insects, birds and bats eyes of octopus and mammals