PHYSICS: IMPORTANT DISCOVERIES(#eduvictors)(#cbsenotes)

Physics: Important Discoveries

No.	Discovery	Scientist	Year
1.	Proton	Rutherford	1919
2.	Neutron	James Chadwick	1932
3.	Atom	John Dalton	1808
4.	Atomic Structure	Neil Bohr & Rutherford	1913
5.	Radioactivity	Henry Becquerel	1896
6.	Radium	Madam Curie	1898
7.	Raman Effect	CV. Raman	1928
8.	X-Rays	Roentgen	1895
9.	Photoelectric effect	Albert Einstein	1905
10.	Periodic table	Mendeleev	1888
11.	Nuclear Reactor	Anrico Fermi	1942
12.	Wireless Telegram	Marconi	1901
13.	Dynamite	Alfred Nobel	1867

CBSE Class 9 - Science - CH9 - Force and Laws of Motion (MCQs)

Force and Laws of Motion

(MCQs)

Q1: An object moving at constant velocity in an inertial frame must:

(a) have a net force acting on it
(b) have zero net force acting on it
(c) not have any force of gravity on it
(d) stop after some time due to gravity


Q2: When a bus starts suddenly from rest, the passengers sitting inside the bus move backwards.  This illustrates an example of

(a) Newton First Law of Motion
(b) Newton Second Law of Motion
(c) Newtons Third Law of Motion
(d) None of these


Q3: One newton is the force ____________

(a) of gravity on a 1 kg body
(b) of gravity on a 1 g body
(c) which gives a 1 g body an acceleration of 1 cm/s²
(d) which gives a 1 kg body an acceleration of 1m/s²

CBSE Class 9/10 - JSTS Exam (GK-3) - 2012-13

GENERAL KNOWLEDGE

(Part-3)(JSTS Scholarship Exam - 2012-13)

You may access GK (Part-1),   GK (Part-2)

Q31: Cell Secretions are processed and packed up by

(a) Golgi apparatus
(b) Nucleus
(c) Ribosomes
(d) Mitochondria




Q32: The temperature range of moon is

(a) -10°C to 10°C
(b) -90°C to 10°C
(c) -190°C to 110°C
(d) -50°C to 250°C





Q33: The Constitution of India came into force on

(a) 26 Nov. 1949
(b) 15 Aug.  1947
(c) 26 Jan.  1947
(d) 26 Jan. 1950





Q34: The National Emblem of India has been taken from the pillar of Sarnath which had:

(a)  An Elephant
(b) Four Lions
(c) A Lion
(d) A Bull

CBSE Class 9/10 - JSTS Exam (GK-2) - 2012-13

GENERAL KNOWLEDGE

(Part-2)(JSTS Scholarship Exam - 2012-13)

You may access GK (Part-1)

Q16: Which of the following countries in 20th century was known as Bread Basket of the world

(a) USA
(b) Canada
(c) Africa
(d) Australia




Q17: Farmers are paid a Pre-announced price for their crops by FCI which is known as:

(a) Cost Price
(b) Market Price
(c) Minimum Support Price
(d) None of these

CBSE Class 9/10 - JSTS Examination (GK-1) - 2012-13

GENERAL KNOWLEDGE

(Part-1)(JSTS Scholarship Exam - 2012-13)

Q1: When was NREGA implemented?

(a) 2003
(b) 2005
(c) 1999
(d) 2007



Q2: Buffer stock is the stock of food grains mainly wheat, rice procured by the Government through

(a) IFCI
(b) IDBI
(c) FCI
(d) None of these



Q3: In how many constituencies India has been for Lok Sabha elections

(a) 541
(b) 542
(c) 543
(d) 544