English

Ankita Bought Some Glucose Powder. She Felt is Was Adulterated with Starch Powder. How Would She Test It? - Science and Technology 2

Advertisements
Advertisements

Question

Ankita bought some Glucose Powder. She felt is was adulterated with starch powder. How would she test it?

Options

  • by sieving

  • by dissolving it in water

  • by iodine test

  • all of the above

MCQ

Solution

by iodine test

shaalaa.com
  Is there an error in this question or solution?
2013-2014 (October)

APPEARS IN

Video TutorialsVIEW ALL [2]

RELATED QUESTIONS

You are given a hammer, a battery, a bulb, wires and a switch.

  1. How could you use them to distinguish between samples of metals and non-metals?
  2. Assess the usefulness of these tests in distinguishing between metals and non-metals.

Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties

Properties Metals Non-metals
1. Appearance Lustrous Dull
2. Hardness Hard Soft
3. Malleability Can be beaten into thin sheets Cannot be beaten into thin sheets
4. Ductility Can be drawn into wires Cannot be drawn into wires
5. Heat Conduction Good conductors of heat Poor conductors of heat
6. Conduction of Electricity Good conductors of electricity Poor conductors of electricity

Name the gas that is produced in the given case:

The reaction of ethanol and sodium.


Name the metal which is the poorest conductor of heat.


State any five physical properties of non-metals.


Name a non-metal which conducts electricity.


Give reasons 

Impure diamond is used to cut glass  


Write ‘true’ or ‘false’ for the following statement 

Sodium can be cut with a knife.  


State any five physical properties of a non-metal.


Name a gaseous non-metal,. having greenish yellow colour.  


State the composition of given alloy: 

Bronze 


Identify the odd term.


From the list of characteristics given below, select the five which are relevant to non-metals and their compounds:

  1. Ductile
  2. Conduct electricity
  3. Brittle
  4. Acidic Oxides
  5. Basic Oxides
  6. Discharged at anode
  7. Discharged at cathode
  8. Ionic chlorides
  9. Covalent chlorides
  10. Reaction with dilute sulphuric acid yields hydrogen
  11. 1, 2 or 3 valence electrons
  12. 5, 6, 7 valence electrons

(Write the five letters corresponding to the correct characteristics).


Select the appropriate option for the following statement:

The element which is a noble metal.


The sound of one metal colliding with another makes a noise, this property is called as _______.


Find the odd one out and give its explanation.


Identify who I am!

Carbon allotropes- _______


The atomic number of an element ‘X’ is 12. Which inert gas is nearest to X?


Generally, non-metals are not lustrous. Which of the following non-metal is lustrous?


Reason out

Mercury is the only metal that is liquid at room temperature.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×