Question
The process of extension of a single-crystal surface by growing a film in such a way that the added atoms form a continuation of the single-crystal structure is called :
This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
Epitaxy
Epitaxy: Crystal Structure Extension Explained
The process described is known as Epitaxy. It involves growing a thin crystalline film on a crystalline substrate. The key feature is that the crystal structure of the deposited film follows the same crystallographic orientation as the substrate, effectively acting as a continuation of the substrate's crystal lattice.
Analyzing the Options
- Epitaxy: This definition precisely matches the question, describing the growth of a film that continues the underlying single-crystal structure.
- Ion Implantation: This technique involves embedding ions into a material, altering its composition and properties, rather than growing a crystalline layer.
- Chemical Vapor Deposition (CVD): While CVD can be used to perform epitaxy, it is a broader technique for depositing thin films. The question specifically asks for the name of the *process* of structure continuation, which is epitaxy itself.
- Electroplating: This method uses electrochemical processes to deposit a metal coating, typically resulting in polycrystalline or amorphous structures, not a direct crystalline continuation of a substrate.
Therefore, epitaxy is the specific term for extending a single-crystal structure by growing a film layer.
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Similar Questions
- If 8085 microprocessor adds 87H and 79H, then :
- The content of register (B) and register (C) of 8085 microprocessor are 0AH and 0BH. It is desired to multiply the content of register B and register C and store the results in accumulator. A part of 8085 program for this purpose is given as :
MVI A, 00H
LOOP ; _ _ _ _ _
_ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _
HLT END
A sequence of instructions to complete the program would be : - The sequence of steps performed by microprocessor to fetch the data byte from memory :
A. The byte is placed in the instruction decoder of the microprocessor.
B. The byte from the memory location is placed on data bus.
C. The control unit sends the control signal $\overline{\text{RD}}$ to enable the memory chip.
D. The microprocessor places the 16-bit memory address from program counter on the address bus.
Choose the correct answer from the options given below : - Sequence of steps in 8085 microprocessor interrupt execution :
A. Interrupt acknowledged
B. Program counter content saved
C. Control transfered to ISR
D. Interrupt vector is read
Choose the correct answer from the options given below : - Consider the following statements regarding the 8085 microprocessor :
A. The 8085 is an 8-bit microprocessor.
B. It has a 16-bit address bus, allowing it to access 64 KB of memory.
C. It has 40 pins.
D. It uses a multiplexed address/data bus.
Choose the correct answer from the options given below : - In 8085 microprocessor, which of the following are 2-byte instructions ?
A. MOV C, A
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D. JMP 2085H
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Choose the correct answer from the options given below : - Match List - I with List - II.Choose the correct answer from the options given below :
List - I
(Addressing Modes)List - II
(Instruction)A. Immediate Addressing I. LDAX B B. Register Addressing II. OUT 01H C. Direct Addressing III. MVI B, 37H D. Indirect Addressing IV. MOV A, B - Match List - I with List - II.
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Choose the correct answer from the options given below : - Match List - I with List - II.
List - I List - II (Bus/Logic) (Function/Characteristic) A. Address bus I. Carries read/write signals, timing signals, and interrupt signals B. Data bus II. A three-state output that can be high, low, or high-impedance C. Control bus III. Unidirectional lines used by CPU to point to a memory location or I/O device D. Tristate logic IV. Bidirectional lines used for transferring data between the CPU and memory
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Important Questions from Miscellaneous
- Which of the following scheduler/schedulers is/are also called CPU scheduler ?
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