Have an account?
Skip to Content
Build your own quiz
20 questions
Show Answers
See Preview
- 1. Multiple Choice
Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?
10 cm
20 cm
30 cm
35 cm
- 2. Multiple Choice
An element X is soft and can be cut with the help of a knife. It is very reactive to air and cannot be kept open in the air. It reacts vigorously with water. Identify the element from the following:
Mg
Na
P
Ca
- 3. Multiple Choice
When a beam of white light falls on a glass prism, the color of light which will deviate least is:
Violet
Red
Green
Blue
- 4. Multiple Choice
Blue colour of the sky is due to the phenomenon of:
Reflection of light
Refraction of light
Dispersion of light
Scattering of light
- 5. Multiple Choice
The neutralization reaction between an acid and a base is a type of:
Double displacement reaction
Displacement reaction
Addition reaction
Decomposition reaction
- 6. Multiple Choice
In a spectrum of light the colour that has the least wavelength is –
Red
Violet
Green
Yellow
- 7. Multiple Choice
Sodium carbonate is a basic salt because it is a salt of
strong acid and strong base.
weak acid and weak base.
strong acid and weak base.
weak acid and strong base.
- 8. Multiple Choice
A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish-blue?
Lemon juice
Vinegar
Common salt
An antacid
- 9. Multiple Choice
One of the constituents of baking powder is sodium hydrogen carbonate, the other constituent is
hydrochloric acid
tartaric acid
acetic acid
sulphuric acid
- 10. Multiple Choice
Which of the following substance will not give carbon dioxide on treatment with dilute acid?
Marble
Limestone
Baking soda
Quick Lime
- 11. Multiple Choice
Common salt besides being used in kitchen can also be used as the raw material for making
I. Washing Soda
II. Bleaching powder
III. Baking soda
IV. Slaked lime
I and II
I, II and IV
I and III
I, III and IV
- 12. Multiple Choice
The gas produced when dil. HCl is added to a reactive metal:
Oxygen
Nitrogen
Hydrogen
None of these
- 13. Multiple Choice
No matter how far you stand from a mirror, your image appears erect. The mirror can be
Plane
Concave
Convex
Either plane or convex
- 14. Multiple Choice
On the basis of sequence of reactions, identify the most and least reactive elements.
A + BX → AX + B
C + AY → CY + A
Most reactive: C; Least reactive: B
Most reactive: B; Least reactive: C
Most reactive: A; Least reactive: B
Most reactive: B; Least reactive: A
- 15. Multiple Choice
An object is placed 40.0 cm in front of a convex mirror. The image appears 15 cm behind the mirror. What is the focal length of the mirror?
+24 cm
+11 cm
–11 cm
–24 cm
- 16. Multiple Choice
Assertion: White silver chloride turns grey in sunlight. Reason: Decomposition of silver chloride in presence of sunlight takes place to form silver metal and chlorine gas.
Both A and R are true and R is the correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true
- 17. Multiple Choice
Assertion: Carbonic acid is weak acid.
Reason: It is ionized completely in aqueous solution.
Both A and R are true and R is the correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true
- 18. Multiple Choice
Assertion: Refractive index is a quantity which does not have any unit.
Reason: Refractive index is the ratio of two similar quantities.
Both A and R are true and R is the correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true
- 19. Multiple Choice
Which of the following salts does not contain water of crystallization?
Blue vitriol
Baking soda
Gypsum
Washing soda
- 20. Multiple Choice
Which of the following is not an ionic compound?
KCl
MgCl2
CCl4
NaCl
- Answer choicesTagsAnswer choicesTags