List of practice Questions

Give scientific reasons :
(iii) Flower is structural unit of sexual reproduction in plant
Write a short note on Environmental Conservation.
Write down any two objectives of disaster management.
Write the correct alternative:
(iii) The apex consumer is .................................... .
Write the correct alternative:
(iv) The Hydroelectric capacity of Koyna dam is .................................... .
Write the correct alternative:
(v) Animal with bilateral symmetry is .................................... .
State whether the following statement is true or false :
To take selfie on road is the invitation for accident
Write the correct co-relation :
Insulin : diabetes :: Interferon : ..............
To which class does bat belong ?
Write the correct alternative:
(i) Vestigial organ ................................... present in human body is proof of evolution.
Write the correct alternative:
(ii) Type of sexual reproduction is .................................... .

Complete the following table: 

Observe the figure and answer the following questions: 

  1. Name the defect of vision represented in the above figure. 
  2. State the reasons for this defect. 
  3. How is it corrected? 
  4. Draw the diagram to show the correction of this defect.

Complete the following flow chart: 

 

Observe the following figure and answer the questions: 

  1. Which element has maximum specific heat capacity? Justify. 
  2. Which element has minimum specific heat capacity? Justify. 
  3. Define specific heat of an object.

Identify the physical and chemical changes from the following phenomena: 

  1. Transformation of ice into water. 
  2. Ripening of fruit. 
  3. Milk turned into curd. 
  4. Evaporation of water. 
  5. Digestion of food in the stomach. 
  6. Iron filings get attracted towards the magnet. 

Read the following sentence and answer the questions: "$\text{NaCl}$ is an ionic compound." 

  1. Why is \( \text{NaCl} \) an ionic compound? 
  2. State any two properties of ionic compounds.

Observe the figure and name the ray \( \text{AB} \), ray \( \text{CD} \), ray \( \text{GH} \): . 

An element has its electron configuration as \(2, 8, 1\). Now answer the following questions: 

  1. What is the atomic number of this element? 
  2. What is the group of this element? 
  3. To which period does the element belong? 

Complete the following table:

Type of SatelliteThe names of Indian Satellite and launcher
(1) Navigational SatelliteSatellite: \(\underline{\hspace{3cm}}\) \(\hspace{1cm}\) Launcher: \(\underline{\hspace{3cm}}\)
(2) Earth observation SatelliteSatellite: \(\underline{\hspace{3cm}}\) \(\hspace{1cm}\) Launcher: \(\underline{\hspace{3cm}}\)

 

Distinguish between Mass and Weight.

How do we feel about air in each of the following conditions? 

  1. Relative humidity is more than \( 60\% \). 
  2. Relative humidity is less than \( 60\% \). 

Write the name of the small satellite made by a group of students from COEP (College of Engineering, Pune) sent to space through $\text{ISRO}$ in $2016$.

Match the pair: 

Group 'A' \(\hspace{3cm}\) Group 'B' 
Substance  \(\hspace{3cm}\) Refractive index 
\(\hspace{1cm}\)  Air \(\hspace{3cm}\)      (a) \( 1.33 \) 
\(\hspace{1cm}\)  Water \(\hspace{3cm}\) (b) \( 1.46 \) 
\(\hspace{1cm}\)  Glass \(\hspace{3cm}\) (c) \( 1.0003 \) 

Complete the following reaction: \[ \text{C}_{12}\text{H}_{22}\text{O}_{11} \xrightarrow{\text{heat}} \text{..................} + \text{..................} \]