Download App

Metals and Non-Metals — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMetals and Non-Metals3 Marks
Question
An element E forms an oxide $E _2 O$. An aqueous solution of $E _2 O$ turns red litmus paper blue.
a. What is the nature of the oxide $E _2 O$ ?
b. State whether element $E$ is a metal or a non-metal.
c. Give one example of an element like E .
✓

Answer

  1. Basic oxide.
  2. Metal.
  3. Sodium,Na.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 Mark Questions]" from Metals and Non-Metals→Metals and Non-Metals — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Write the structural formulae of all the isomers of hexane.
→
Name and state the rule to find the direction of:
  1. current induced in a coil due to its rotation in a magnetic field.
  2. force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.
→
Name the type of respiration in which the end products are:
  1. a. $C _2 H _1 OH$ and $CO _2$.
    b. $CO _2$ and $H _2 O$.
    c. Lactic acid.
Give one example of each case where such a respiration can occur.
→
(i) Name the metal which does not stick to glass?
(ii) Name the non-metal which is a good conductor of electricity?
(iii) Name the metal which is commonly used in thermit welding?
(iv) What gets deposited at the cathode, a pure or impure metal?
(v) What is the nature of Zinc oxide?
→
An object 2cm tall is placed on the axis of a convex lens of focal length 5cm at a distance of 10m from the optical centre of the lens. Find the nature, position and size of the image formed. Which case of image formation by convex lenses is illustrated by this example?
→
A student claims that because of atmospheric refraction, the sun can be seen after it has set, and the day is, therefore, longer than if the earth had no atmosphere.
  1. What does the student mean by saying that the sun can be seen after it has set?
  2. Do you think that the students conclusion is correct?
→
List any four steps involved in sexual reproduction and write its two advantages.
→
List three advantages each of:
  1. Exploiting resources with short term aims.
  2. Using a long term perpective in managing our natural resources.
→
A cross was carried out between a pure bred tall pea plant and a pure bred dwarf pea plant and $\text{F}_{1}$progeny was obtained. Later, $\text{F}_{1}$ the progeny was selfed to obtain $\text{F}_{2}$progeny. Answer the following questions:
  1. What is the phenotype of the $\text{F}_{1}$ progeny and why?
  2. Give the phenotypic ratio of the $\text{F}_{2}$ progeny.
  3. Why is the $\text{F}_{2}$ progeny different from the $\text{F}_{2}$ progeny?
→
The filament of a lamp is 80cm from a screen and a converging lens forms an image of it on a screen, magnified three times. Find the distance of the lens from the filament and the focal length of the lens.
→