List of top Science and Technology Questions asked in Maharashtra Class X Board

What is meant by satellite launch vehicle? Name any one Indian satellite launch vehicle.
The focal length of a convex lens is 20 cm. What is its power?
Write any three general properties of ionic compounds.
State Newton’s universal law of gravitation.
What are the factors affecting the rate of chemical reaction?

Complete the following table by observing the given figures:

What is free fall? When is it possible?
Give scientific reasons (any two):
When the gas formed on heating limestone is passed through freshly prepared lime water, the lime water turns milky.
On exposure to air, silver articles turn blackish after some time.
Answer the following (any three):
State Dobereiner's law of triads. Give one example of it.

Match the Columns:

Tungsten metal is used to make a solenoid-type coil in an electric bulb.
Write the molecular formula of calcium carbonate.

Identify the hydrocarbon from the given electron-dot structure:

Identify the figure and explain its use.

The SI unit of heat is ..........................................
Write the molecular formula of calcium carbonate.
Answer the following:
Write the name of the atom having the smallest size.
In a simple microscope, ........................ lens is used.
....................... is the functional group of carboxylic acid.
We can see the sun even when it is a little below the horizon because of ..........................................
In .................. process, a layer of molten tin is deposited on metals.

पुढील शब्दकोडे सोडवा :
(1) मद्य, तंबाखूजन्य पदार्थांचे सेवन .......... आहे.
(2) या औषधाचे सेवन गुन्हे घडवण्याची शक्यता.
(3) राणाच्या नशिला करण्याचा पदार्थ.
(4) ताणतणावामुळे जीवन जगण्यात अडचण.
(5) विविध घटकांच्या .......... अभ्यास परिणाम होतो.
(6) खाद्यपदार्थ वनस्पतीमध्ये साठा.

खालील प्रश्न सोडवा (कोणताही एक):
(1) अंडाशयात रोमविकास कसा असतो?
 

(2) अंडाशयात सामान्यतः कोणते बदल दिसतात?
(3) गर्भाशयाच्या भिंतींमध्ये कोणते अपवाद बदलत असतात?
(4) अंडाशयात गर्भधारणेच्या आधी कोणते जुनीमूल्यक बदल दिसतात?
(5) अंडाशयात गर्भधारणेनंतर कोणते जुनीमूल्यक बदल दिसतात?
 

दिलेल्या पर्यावरणमूल्ये व पर्यावरण धोके यावर आधारित परिच्छेद पूर्ण करा.