9th Class General Science First half Book Paper

Q1. Multiple choice questions (Attempt all · 15 × 1 = 15)

1. The neutral atoms of all of the isotopes of the same element have
   1. Different number of protons
   2. Equal numbers of neutrons
   3. The same number of electrons
   4. The same mass numbers
2. Which of the following statements describes a way in which plants cells and animal cells are similar ?
   1. They have cell walls
   2. They both make sugars from sunlight
   3. They both contain mitochondria
   4. They both are prokaryotic
3. Which one includes all fields of natural science related to the planet Earth?
   1. physical science
   2. life science
   3. earth science
   4. soil science
4. Which kingdom includes prokaryotic organisms?
   1. Protista
   2. Animalia
   3. Monera
   4. Fungi
5. The reason of bonding in ionic compounds is..........
   1. Sharing of electrons
   2. Repulsion force
   3. Attraction force
   4. None of these
6. How many neutrons are there in an atom of potassium
   1. 19
   2. 20
   3. 39
   4. 58
7. A 3-D modelling is:
   1. Mathematical representation of a three-dimensional surface
   2. Animation story board modelling
   3. Creating sketching for a 3-D model
   4. None of these
8. Which one is the study of the nature of our physical world and the universe?
   1. natural science
   2. social science
   3. formal science
   4. applied science
9. Which kingdom is mismatched with the characteristics?
   1. Fungi-usually saprotrophic
   2. Animalia-rarely ingestive
   3. Protista-various modes of nutrition
   4. plantae-photosynthetic
10. A polar covalent bond will be formed in which one of these pair of atoms:
    1. HF
    2. H₂
    3. Cl₂
    4. O₂
11. What does atomic number of an element indicate indicates?
    1. Neutron plus number of protons in the nucleus
    2. Electron in the nucleus
    3. Neutron in the nucleus
    4. Proton in the nucleus
12. what are the functions of mitochondria ?
    1. lipid synthesis
    2. protein synthesis
    3. photosynthesis
    4. cellular respiration
13. Which field of study is interdisciplinary in nature?
    1. cognitive science
    2. anthropology
    3. geography
    4. glaciology
14. _________ is an example of an ex-situ conservation.
    1. Sacred groves
    2. Wildlife sanctuary
    3. Seed bank
    4. National park
15. Ionic compounds have_____ melting points due to _____ ionic compounds
    1. High,weak
    2. High,strong
    3. Low,strong
    4. Low,weak